There are at least three common mistakes that lead to problems with loading Windows 7. When errors occur, the system displays a short message on the monitor screen indicating the problem. It is these small guidelines that we will be guided by when solving problems that arise.
Perhaps the most popular error is Disk boot failure, insert system disk and press Enter
It is characterized by the following situation: you turn on the computer, but instead of the usual boot operating system Windows 7, this message is displayed for you. It means that the system recognized the disk from which it starts as non-system, that is, according to Windows 7 system files, necessary to run it, are not on this disk. This can be caused by various reasons. Let's look at the most common ones.
Possible option. A disc was inserted into the DVD-ROM or a flash drive was connected and your BIOS is configured so that by default it sets the launch of one of these media. As a result, the system cannot find the files it needs to run on the flash drive or DVD disc and reports an error.
Elimination. You should try turning off absolutely everything external drives: phones, memory cards, flash drives and external drives. After this, you should turn on the computer again. Most likely, the system will start correctly this time.
It may be that the recommendations provided above will not help. In this case, you need, firstly, to BIOS settings set your default launcher system disk. And secondly, you should make sure whether the BIOS detects your system disk at all. It may be that it is out of order.
If the system correctly displays the system disk, you can use it. We will touch on this a little later, at the end of the article.
If the system does not display your main hard drive, you can try to disconnect it and connect it back, or to the socket next door, if present.
Other problems can also lead to this error, for example, viruses, etc. In any case, it is best to first check the methods that we have mentioned. Most likely they will work. If not, then feel free to go to the end of the article, in which we indicated step-by-step elimination Windows problems 7 using the utility.
Error BOOTMGR is missing
Due to this error, you will also not be able to start Windows 7 correctly - a message on a black screen - BOOTMGR is missing. This problem can also be caused by various reasons, including all kinds of viruses. It can be caused by erroneous actions of an inexperienced user who accidentally changed boot entry hard drive. Also physical HDD problems are often the cause of this error.
Elimination. Check whether the hard drive on which the system is installed is working properly. Ask the environment for help Windows recovery 7, about which below.
Error NTLDR is missing. Press Ctrl + Alt + Del to restart
This problem manifests itself in almost the same way as the previous one. You should also use the Troubleshooting Environment to resolve this issue.
At Windows startup 7 the user sees only a black screen and a mouse pointer
If, when the system starts, the usual desktop with the start menu does not load, and all we can see is the mouse pointer, then everything is not so difficult and in the vast majority of cases it is easy to fix. Very often this error occurs if you use antivirus program got rid of some serious virus that had already caused trouble and these same troubles were not fully corrected by the antivirus program.
Elimination. Restart your computer and as soon as the mouse pointer appears, press Ctrl + Alt + Del. The Task Manager will immediately appear.
In it you need to select the “File” menu in which to create a new task (execute). A dialog box will appear, in which you should enter the regedit command and press Enter. This will launch the Windows 7 system registry editor.
We will need to look through the sections in the editor:
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows NT/Current Version/Winlogon/
- HKEY_CURRENT_USER/Software/Microsoft/Windows NT/Current Version/Winlogon/
Now you need to edit the value Shell.
With the first section, make sure that the Shell parameter is set to Explorer.exe, if this is not the case, then install it yourself. In the second case, you need to go to the section and look: if there is a Shell entry in it, then it needs to be removed from there. Now all that remains is to close the registry window and simply restart the computer. Everything should fall into place.
And so, everything that we could not eliminate on our own, we eliminate with the help standard utilities systems
In most cases, if problems arise when starting the operating system, we can see the Windows 7 recovery screen. It is this screen that will help us in restoring the system startup. If the recovery screen does not appear on its own, then the next time the system reboots we can call it up by pressing a key F8. Select "Troubleshoot your computer" from the menu
As soon as problems are found, they will be automatically corrected by the utility. But it may also be that system utility will not find any problems. Then we can use the system recovery functions, this often helps if problems with starting the system arose due to the installation of a system update or third-party software. Since the service interface is intuitive, the problem will not be difficult to solve. That's all. In 99% of cases, you will be able to solve one of the problems that leads to the Windows 7 startup error. Otherwise, the problem is in the hardware of your computer. It is also possible if you are sure that everything is in order with the hardware. We wish you good luck!
A frequent question from computer users is why Windows 7 does not start or does not start. At the same time, quite often some additional information missing from the question.
So I thought it would be a good idea to write an article that describes the most common reasons, which may cause problems when starting Windows 7, errors that the OS writes, and, of course, ways to fix them.
It may turn out that none of the options suits you - in this case, leave a comment on the article with your question, and I will try to answer as quickly as possible. I would like to note right away that I do not always have the opportunity to immediately give answers.
Error Disk boot failure, insert system disk and press Enter
One of the most common errors: after turning on the computer, instead of loading Windows, you see an error message: Disk Boot Failure.
This suggests that the disk from which the system tried to start, in its opinion, is not a system one. This can be caused by various reasons, the most common of which (after describing the cause, a solution is immediately given):
1) A disc is inserted into the DVD-ROM, or you connected a USB flash drive to the computer, and the BIOS is configured in such a way that it sets this drive to be used for booting by default - as a result, Windows does not start.
Try disconnecting all external drives (including memory cards, phones and cameras charged from the computer) and removing the disks, then try turning on the computer again - it is likely that Windows 7 will start normally.
2) The BIOS has an incorrect boot order - in this case, even if you followed the recommendations from the method above, this may not help.
At the same time, I note that if, for example, Windows 7 started this morning, but now it doesn’t, then you should still check this option: the BIOS settings may be lost due to a dead battery on motherboard, due to power failures and static discharges. When checking the settings, make sure that the system hard drive is detected in the BIOS.
3) Also, provided that the system sees the hard drive, you can use the Windows 7 startup recovery tool, which will be discussed in the very last section of this article.
4) If the hard drive is not detected by the operating system, try, if possible, disconnecting it and reconnecting it, checking all connections between it and the motherboard.
There may be other reasons for this error - for example, problems with the hard drive, viruses, etc. In any case, I recommend trying everything described above, and if this does not help, go to the last part of this guide, which describes another method that is applicable in almost all cases when Windows 7 does not want to start.
Error BOOTMGR is missing
Another error that prevents you from starting Windows 7 is the BOOTMGR is missing message on a black screen.
This problem can be caused by a variety of reasons, including viruses, independent erroneous actions that change the boot record of the hard drive, or even physical problems on the HDD.
Error NTLDR is missing. Press Ctrl + Alt + Del to restart
By its manifestations and even by the method of solution this error somewhat similar to the previous one.
In order to clear this message and resume normal startup of Windows 7, use the previous instructions.
Windows 7 starts but only shows a black screen and mouse pointer
If, after starting Windows 7, the desktop and the Start menu do not load, and all you see is just a black screen and a cursor, then this situation is also quite easy to fix.
As a rule, it occurs after the virus is removed independently or with the help of an antivirus program, when the malicious actions committed by it have not been fully corrected.
Fixing Windows 7 startup errors using built-in utilities
Often, if Windows 7 does not start due to changes in the hardware configuration, improper shutdown of the computer, or other errors, when you start the computer, you may see the Windows Recovery screen, where you can try to restore Windows startup.
But, even if this does not happen, if you press F8 immediately after BIOS boot, but even before Windows 8 starts loading, you will see a menu where you can launch the “Troubleshoot your computer” item.
You will see a message that Windows files are being downloaded, and after that you will be prompted to select a language, you can leave Russian.
The next step is to log in with your account. Better to use account Windows 7 Administrator. If you did not set a password, leave the field blank.
After this, you will be taken to the System Restore window, where you can run automatic search and fix problems that prevent Windows from starting by clicking on the appropriate link.
After searching for problems, the utility can automatically fix errors due to which Windows does not want to start, or it may also report that no problems were found.
In this case, you can use the system recovery functions if the operating system stops starting after installing any updates, drivers or something else - this may help. System Restore is generally intuitive and can help quickly solve Windows startup problems.
That's all. If you have not found a solution specifically to your situation with starting the OS, describe in detail, if possible, what exactly is happening, what preceded the error, what actions have already been tried, but did not help.
Sometimes PC users encounter such an unpleasant situation as the inability to launch programs. Of course, this is a very significant problem that prevents most operations from being performed normally. Let's see how you can deal with it on computers running Windows 7.
When we talk about the inability to run programs on Windows 7, we primarily mean problems associated with EXE files. The causes of the problem may vary. In accordance with this, there are various ways eliminate this type of problem. Specific mechanisms for solving this problem will be discussed below.
Method 1: Restore the EXE file association through Registry Editor
One of the most common reasons why applications stop starting with EXE extension, is a violation of the file association due to some kind of failure or virus activity. After this, the operating system simply ceases to understand what needs to be done with this object. In this case, it is necessary to restore the broken associations. This operation is performed through the system registry, and therefore, before starting the manipulation, it is recommended to create a restore point so that, if necessary, you can undo the changes made to "Registry Editor".
- To solve the problem you need to activate "Registry Editor". This can be done using the utility "Run". Summon her using the combination Win+R. In the field enter:
Click "OK".
- Starts "Registry Editor". On the left side of the window that opens, registry keys are presented in the form of directories. Click on the name "HKEY_CLASSES_ROOT".
- A large list of folders opens, arranged in alphabetical order, the names of which correspond to file extensions. Look for a directory that has the name ".exe". Having selected it, go to the right side of the window. There is a parameter called "(Default)". Click on it right click mice ( RMB) and select a position "Change…".
- "Meaning" bring in "exefile", if it is empty or if there is any other data there. Now press "OK".
- Then return to the left side of the window and look in the same registry section for a folder called "exefile". It is located below the directories that have extension names. Having selected the specified directory, move to the right side again. Click RMB by parameter name "(Default)". Select from the list "Change…".
- The parameter editing window appears. In the field "Meaning" write down the following expression:
Click "OK".
- Now, going to the left side of the window, return to the list of registry keys. Click on the folder name "exefile", which was previously allocated. Subdirectories will open. Choose "shell". Then highlight the subdirectory that appears "open". Moving to the right side of the window, click RMB by element "(Default)". Select from the list of actions "Change…".
- In the parameter change window that opens, change the value to the following option:
Click "OK".
- Close the window "Registry Editor", then restart your computer. After turning on the PC, applications with the EXE extension should open if the problem lay precisely in the violation of file associations.
Method 2: "Command Line"
The problem with file associations, due to which applications do not start, can also be solved by entering commands in "Command line" running with administrative rights.
- But first, we need to create a registry file in Notepad. Click here "Start". Next, select "All programs".
- Go to the catalog "Standard".
- Here you need to find the name "Notebook" and click on it RMB. From the menu, select . This important point, since otherwise it will not be possible to save the created object in the root directory of the disk C.
- Starts standard text editor Windows. Enter the following entry into it:
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]
"exefile"=hex(0): - Then navigate to the menu item "File" and choose "Save as...".
- The window for saving the object appears. Go to the root directory of the disk C. In the field "File type" change the option « Text documents» per point "All files". In the field "Encoding" select from the drop-down list "Unicode". In the field "File name" Write any name that is convenient for you. After it you need to put a dot and write the name of the extension "reg". That is, in the end you should get an option according to the following template: "File_name.reg". After you have completed all the above steps, click "Save".
- Now it's time to launch "Command line". Again through the menu "Start" and point "All programs" move to the directory "Standard". Look for the name "Command line". Once you find this title, click on it RMB. Select from the list "Run as administrator".
- Interface "Command line" will be opened with administrative powers. Enter the command using the following pattern:
REG IMPORT C:\filename.reg
Instead of a part "file_name.reg" you need to enter the name of the object that we previously created in Notepad and saved on disk C. Then click Enter.
- An operation is being performed, the successful completion of which will be immediately reported in the current window. After that you can close "Command line" and restart the PC. After restarting the computer, programs should resume opening normally.
- If, however, EXE files still do not open, then activate "Registry Editor". How to do this was described in the description of the previous method. In the left part of the window that opens, go through the sections one by one "HKEY_Current_User" And "Software".
- A fairly large list of folders opens, which are arranged in alphabetical order. Find a catalog among them "Classes" and go to it.
- A long list of directories opens, which have the names of various extensions. Find the folder among them ".exe". Click on it RMB and choose an option "Delete".
- A window opens in which you need to confirm your actions to delete the partition. Click "Yes".
- Further in the same registry section "Classes" look for the folder "secfile". If found, click on it in the same way RMB and choose an option "Delete" followed by confirmation of your actions in the dialog box.
- Then close "Registry Editor" and restart your computer. When you run it again, opening objects with the EXE extension should be restored.
Method 3: Disabling File Locking
Some programs may not run in Windows 7 simply because they are blocked. This only applies to launching individual objects, not all EXE files generally. To solve this problem, there is our own overcoming algorithm.
Method 4: Eliminate viruses
One of the most common reasons for failure to open EXE files is a virus infection of the computer. By disabling the ability to run programs, viruses thereby try to protect themselves from anti-virus utilities. But the user is faced with the question of how to run an antivirus to scan and disinfect a PC if activation of programs is impossible?
In this case, you need to scan your computer with an anti-virus utility using a LiveCD or by connecting to it from another PC. To eliminate the effects of malware, there are many types of specialized software, one of which is Dr.Web CureIt. During the scanning process, when the utility detects a threat, you must follow the advice that is displayed in its window.
As you can see, there are several reasons why all programs with the EXE extension or only some of them do not run on a computer running Windows 7. Among them, the main ones are the following: malfunctions of the operating system, virus infection, blocking of individual files. For each reason there is its own algorithm for solving the problem being studied.
Very often we encounter operating system problems. The issue is especially unpleasant when Windows 7 does not start at all. But let’s look at everything in more detail. In order to correctly and reliably understand this issue, it would be good to study its main components.
After all, this problem does not happen on its own. In the article we will also tell you what to do to try to quickly resume Windows 7 (if possible).
You can contact our service for a solution to this and other problems of laptops and computers using the contacts in the header of the site and our specialists will do the work inexpensively, efficiently and on time
And so, let's go.
The operating system (OS) Windows 7 and its predecessors are very popular, and a huge amount of money is spent on their development. Despite this, it happens that they often do not work very stable or do not want to start at all.
Moreover, it would seem that you didn’t do anything special at the computer, but Windows works unstable and incorrectly. Well, since a lot of important and necessary information(), then a sudden interruption in work can bring a lot of trouble.
You have to take your computer in for repairs, and there is a risk of losing everything. important information on the hard drive (as a result, if you try to solve the problem yourself). And these are usually working documents and educational documents, ranging from electronic lectures to coursework and a host of other important files.
Almost everything lost (deleted) can be restored; for more details about this service, read the article recover data. Therefore, you should never hope that “it will carry me through.”
It is important to understand that many problems can be avoided by treating the operating system correctly.
Common reasons why Windows 7 won't start
One of the reasons is the inability to boot due to damage to the OS registry, as a result of which it cannot boot and proceeds according to instructions, i.e. does a reboot in the hope that the next boot will fix the problem.
The situation is, of course, not simple; to understand it, it is worth finding out the possible reasons for its occurrence.
So why might Windows 7 crash? This usually happens for the following reasons:
- Failure in computer parts, which can also occur due to problems with the network power supply
- Malware or viruses that damage the registry itself (need good antivirus, even a free one will do, but it’s reliable)
- Hard drive failures - its complete or partial failure. Most often without repair in special. service or replacement is not necessary. Moreover, it would be nice to always monitor its status, since you can instantly, if it breaks, lose all your accumulated files on your computer
- Problems with the file system can be restored, but the process is not simple and requires special knowledge and tools
- Also, if you installed some new device due to which a failure occurs, namely a problem with the drivers of this device, which simply may not be suitable for this operating system
- And, what happens not so rarely is mechanical damage to the hard drive, i.e. if you somehow dropped or hit it (the system unit gave in or the laptop was dropped, etc.) or its service life has simply expired
If we summarize for the reasons listed above, then at home you can only cope with point 2.5 at best. Most often, you cannot do without additional help. You ask, what is the benefit of the article then? Well at least:
- You save time, do not waste it on unsuccessful attempts to fix the problem, but immediately contact professional help. This way you save time and sometimes money
- You will also find information here about what breakdowns most often occur, which means you will pay more attention to these points in order to prevent them (fortunately there is plenty of information here on the site and on the Internet in general) or to know how to act most quickly when they occur, which again saves time
Popular ways to solve the problem of starting Windows 7, that is, what can be done on the spot without asking for help
Running Last Known Good Configuration
The simplest thing you can immediately try to do is, when loading the OS, in the menu that appears, select - launch the latest successful configuration. This method, although not often, can help; it sends the OS to the last successfully saved point to boot from it.
It activates like this: When booting your PC, press the F8 key. Thus, a black screen with command lines should appear in front of you. We select the launch of the last known good configuration we need:
As a result, a reboot will occur and an attempt to boot from the last successfully recorded version of the system, in which everything worked stably. This doesn't always help. So, if it doesn’t work, then read on.
Starting in Safe Mode
Next, we can use a method called “safe mode”, i.e. loading Windows 7 into safe mode. This mode is turned on again when the computer boots with the F8 key, or rather, the selection menu only appears there. Here we select “safe mode” at the top.
What does this mode provide? And it allows us to boot the OS without drivers, i.e. almost clean operating system:
- Firstly, this may immediately suggest that the problem, if the boot took place in safe mode and you ended up in Windows, is a failure of the device drivers. You need to delete them until you find the faulty one.
- Secondly, there is a chance to go in and, for example, scan the system for viruses using the free scanner Dr.Web CureIt! - we highly recommend it if you need to clean your system from viruses. Just write it in a search engine and add “download”, then simply download it from the official website free.drweb.ru
Dust accumulation inside the system unit
Albeit not often, but the reason why Windows 7 does not boot may be simple dust or oxidation of contacts, i.e. take it and just take it out - insert all the computer connectors such as mice, keyboards, video cards, monitors, etc. And blow them out or clean them with a brush or something else.
By cleaning the parts from dust often enough, you can restore normal operation of your PC.
Reset system settings to default
The next method takes us inside system unit. It has a motherboard on which all the computer parts are attached - processor, video card, etc. And on this motherboard, if you look closely, there is usually a battery at the bottom that stores the computer’s boot settings when it is unplugged.
You just need to take out the battery, wait about a minute and put it back, of course this needs to be done with the cord unplugged from the outlet. Otherwise, the settings will not be lost. This method can help in many situations, so don't neglect it. Also, don’t forget that if the time and date on your computer get lost, just replace the battery. It’s easy to buy, just come to any “battery store :)” and say - please give me a 2032 coin cell battery - this is exactly what you need. Everything is done.
It’s unfortunate to conclude, but if you still can’t start Windows 7, you’ll have to reinstall it
There is a lot of information on this site on this issue in case the OS no longer starts and you have to reinstall it. In general, in most cases this is the most reliable way, in which you can get a new, high-quality and fast-running Windows.
True, we should not forget that only an experienced master can reliably carry out this process. If you decide to use the services of such a specialist, then simply contact us using the contacts in the header of the site. Don't worry, we're not saying that only we can do this, not at all.
If you can also reinstall and configure Windows quite well, then that’s just great. But it often happens that the user does not have such an opportunity, so in this case we offer our services so that the PC can be restored as quickly and reliably as possible.
Conclusion
And so we have looked at the main ways you can try to get out of the situation when for some reason Windows 7 does not start. Many other factors can influence the startup, we have looked at the most basic ones. We recommend that you contact our service for quality assistance and get the fastest, stably working computer or laptop.
Coming across an error like “Operating system not found” while booting your computer can be nerve-wracking. But, if you have 7 installed, then you have nothing special to fear. After all, such loading errors can often be resolved with just a few simple steps.
In many cases, the inability to boot Windows 7 may simply be due to an incorrect boot order in the BIOS. This can happen if you have more than one hard drive installed in your computer. Typically, entering the BIOS occurs a few seconds after turning on the computer by pressing a button Delete or by pressing the special function key. Once you enter the BIOS, make sure your Windows 7 hard drive is in the correct place in the boot queue. If you don't know where to look, read the instructions for your motherboard.
If you wish, you can first try the Startup Repair option, which often automatically solves many boot problems. However, in this article, we will use the Command Prompt option to solve our problems manually. Therefore, to continue, click on Command Prompt.
Step five: Once at the Command Prompt, type the following command and press Enter:
If it is completed successfully, you will see a corresponding welcome message, such as “The operation completed successfully.” This is what you need! Your MBR has been restored!
Even though the above command fixes the MBR (and sometimes that's enough), there may still be an error with the system partition's boot sector and Boot Configuration Data (BCD). This may happen if you tried to install another operating system in addition to Windows 7, such as Windows XP. To write a new boot sector, try the following command:
If your Windows 7 is still not detected when you boot your computer, or you want to include more than one operating system in the system boot list, try the following command to rebuild your BCD:
bootrec.exe /RebuildBcd
The above command will scan all your drives for other Windows 7 compatible operating systems and allow you to add them to the system's boot list. If this doesn't work, then you may need to backup your old BCD folder and create a new one using the commands below:
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd
Some users simply delete the old boot folder and try the above steps to solve their boot problems. But it is not recommended to do this.
How to change active partitions
After intentional change active partition On our system disk, during system boot, we encountered a BOOTMGR is missing error, which did not allow us to boot Windows. This is a common error that occurs when you start “playing” with partitions on the system disk. And solving it can cause a serious headache if you don’t prepare for it in advance.
To reverse the active partition, use your Windows 7 recovery disc or installation DVD and follow the steps below.
Step one: Follow the above steps (one through four). This should take you to the Windows recovery environment command prompt.
Step two: Type DiskPart and then press Enter.
Step three: Type List Disk and press Enter. This command will list all the drives connected to your computer and assign numbers to them.
Step four: Enter Select Disk x, where x is the number of the disk containing the partition you want to make active. Press Enter.
Step five: Type List Partition and press Enter. This will allow you to see a list of partitions on the selected drive. Determine which section you want to make active.
Step six: Enter Select Partition x, where x is the number of the partition you want to make active. Press Enter.
Step seven: Now just type Active and press Enter. This command will make the section you selected active.
How to create a Windows 7 system repair disc
Windows 7 makes it easy to create your own disk system recovery, if, of course, your operating system is already installed and running.
Step one: Click on the Start button -> Programs -> Maintenance -> Create a system repair disk.
Step two: Insert a blank CD or DVD into your optical drive.
Step three: Click on the create disk button and let the program do its job.
Just what you need! The program only needs to write 140-160MB of data to disk (depending on the type of operating system), which should only take a few minutes. If you don't have a CD/DVD-R optical drive that you could use to create a recovery disc (and for subsequent use), then you can download an ISO image of a Windows 7 system recovery disc and then use it to create bootable USB flash drive.
How to create a bootable USB flash drive with a Windows 7 system repair disc
Step one: Download the Windows 7 system recovery disk image ().
To download you will need a torrent client, like. Alternatively (if you have a DVD drive), you can use the Windows 7 installation disc or the Windows 7 system recovery disc. In this case, you should skip straight to step seven.
By the way, using the Windows 7 installation disk in the seventh step, you can not only restore the system, but also install Windows 7 from a USB drive, which can be very useful if you are a netbook user.
Step two: Open a command prompt with administrator rights. To do this, click on the Start button -> Programs -> Accessories -> right-click on Command Prompt and select Run as administrator.
Step three: Having confirmed everything UAC requests, you should find yourself in command line. Make sure your USB flash drive is connected to your computer, then type DiskPart and press Enter.
Step four: Type List Disk and press Enter. Determine which number corresponds to your USB flash drive. In our case, the USB flash drive corresponds to Disk 1. We determined this by the capacity of the flash drive, which we have is 2GB.
Step five: Enter the commands below in order, changing the disk number to your own. Warning - executing the commands below will erase all data on your USB flash drive or drive of your choice.
Select Disk 1
Clean
Create Partition Primary
Select Partition 1
Active
Format FS=NTFS
Step six: Once DiskPart has successfully formatted your USB flash drive (which may take a few minutes), you need to enter the following commands:
Step seven: Now you need to copy the contents of the ISO image (or DVD) you downloaded to your USB flash drive. It's just a couple of folders and a file. To extract files from an ISO image you will need some kind of program, like.
Step eight: Now that the files have been copied, you need to make your USB flash drive bootable. To do this you need to download a small file. This file can also be found in the boot directory of the Windows 7 installation disk. After downloading, place bootsect.exe in the root folder of your USB flash drive.
Step nine: Back at the command prompt, you need to change the current directory to the root directory of the USB flash drive. In our case, the flash drive corresponds to the letter E, so we will use the following commands:
e:
bootsect /nt60 e:
The bootsect command will add compatible boot code to the specified volume. If everything goes well, you will receive a bootable, recovery USB flash drive. However, when using it, do not forget that it must be indicated in the BIOS boot list.
Many computer and laptop users have probably encountered problems loading Windows 7. The operating system simply refused to boot and gave an error. In such cases it is impossible to even enter Safe Mode By F8.
The first thing that comes to mind in such situations is reinstalling Windows itself. The procedure is simple and well described in the manuals: Installing Windows 7 and many others.
Reinstallation will solve the problem with loading the system, but you don’t want to lose documents, programs, you don’t want to set everything up again, installing drivers and applications, as well as configuring them can take a lot of time.
Comment: This guide does not cover hardware problems such as problems turning on the laptop itself, problems with the image, and so on.
Fortunately, there is a simpler way to solve the system boot problem. Bootloader corruption is usually the cause of system boot problems. Windows, disruption MBR. To restore the system, you need to restore this same bootloader and MBR. How to do this will be described below.
Restoring Windows to Normal Boot
MBR and bootloader recovery process Windows 7 almost completely identical to that for Windows Vista. This means that the recommendations described below can be safely applied to recovery Windows Vista .
Let's begin. First of all, we need a boot disk or flash drive with the distribution kit Windows 7. How to prepare them is described in detail in the manuals: Installing Windows 7 with USB flash drives on a laptop, netbook or regular PC
Now you should select the item System Restore down:
After this, a search will begin for installed copies of Windows on your hard drive:
As a result, the wizard should find the installed Windows 7. Select it and click Next:
The Windows recovery menu should appear:
Let's look at what each point is for:
- Startup recovery- recovery of Windows bootloader and system files
- System Restore- restoring the system from restore points. Restore points are created automatically when important system updates are installed, and can also be created manually by the user
- Restoring a system image- restoring Windows from a disk image
- Windows Memory Diagnostic Tool- checking RAM for errors. Quite a useful thing.
- Command line- command line for manual recovery
The first two points, as well as the last one, are of interest to us. Let's first consider Startup recovery. This is the easiest way to restore normal system booting. Let's launch it. The diagnostics should run:
After some time the problem will (or will not) be fixed:
Let's now look at the second menu item - System Restore. Let's try to restore the system from restore points. To do this we launch System Restore:
Now select the last restore point and click Next:
Click on Ready We agree with the warnings:
Reboot your laptop or computer.
P.S. It is not always possible to solve the problem using the methods described above; therefore, you will have to start analyzing the text of the error message that appears during PC startup and look for alternative options.
Windows 7 won't boot
A message with the text “BOOTMGR is missing” indicates that the Windows 7 operating system boot loader is damaged or missing. To solve this problem, you will need a Windows 7 installation disk or a disk with ERD Commander (32bit or 64bit, corresponding to your OS), which can be found in. In the “Boot device priority” section of the BIOS settings, assign the first boot device CD/DVD drive. Then boot from the Windows installation disc and select the "System Restore" menu item. From the list of installed operating systems (if you have several of them), select the one you need and click the “Next” button. In the “System Recovery Options” window that appears, there are two items - “System startup recovery” and “Command line”, you will need them. The first option will automatically fix the problem with starting the operating system, and if it fails, you will have to turn to the second. At the command prompt, type “bootrec /rebuildbcd”, press “Enter” and agree to make changes to the boot configuration data by alternately pressing the “Y” and “Enter” keys. After this, all that remains is to create a new boot sector using the console command “Bootrec / FixBoot” and reboot the computer.
Compressed Partitions
As a result of erroneous compression of the partition with Windows 7 boot files, the message “BOOTMGR is compressed” may appear. The ntfs.sys file system driver, which is responsible for working with compressed disk partitions, begins to operate much later than the Bootmgr.exe loader. In this case, you will again have to turn to the Windows 7 installation disk, on the command line of which you need to sequentially run a number of commands:
- expand bootmgr temp
- attrib bootmgr -s -g -h
- del bootmgr
- ren temp bootmgr
- attrib bootmgr -a +s +r +h
- bootrec/fixboot
Windows XP won't boot
The error “NTLDR is missing” indicates that the NTLDR file, which is the Windows XP loader, is damaged or missing. Unlike BOOTMGR in Windows 7, which is stored in a separate hidden partition, the NTLDR file is located on the same drive as the operating system. It happens that inexperienced users mistake system files with names unknown to them for malicious programs and without a doubt remove them. This fate often befalls the innocent NTLDR, as well as another critical file for successful loading of the OS - ntdetect.com. To solve the problem, you will need a Windows XP installation disk. At the very beginning of the download process, you must press the “F10” key to get into the recovery console. With its help, you need to go to the Windows installation disk using the command “X:”, where X is the letter of the corresponding optical drive. Then all that remains is to copy the two missing files to the hard drive partition with the OS by running the commands:
- litter i386\ntldr C:
- litter i386\ntdetectcom C:
This method is also effective in case of loss of any other system files, copies of which can be found on the Windows 7 and XP installation disks, respectively. The “NTLDR is compressed” error rarely appears because it only affects computers running Windows XP without SP2. It can occur in cases where there are too many files stored in the root of the C: drive. A similar problem with NTLDR boot loader compression is solved in the same way as if it is damaged or deleted - by copying the original file from the Windows XP installation disk.
Boot device not found
Error message appears “No bootable device” and its many variations (“Boot device not found", "Invalid boot device", "Non system disk or disk egor", etc.) indicate that the computer has not even started to start the operating system, since it does not see the boot sector or even the hard drive. To understand where the problem lies - at the software or hardware level, just go to the already familiar “Boot device priority” section of the BIOS settings. If the hard drive is not among the suggested options, then the problem is related to the hardware. The SATA or IDE cable or hard drive power cable may have come loose, or the HDD may have failed. If the computer normally recognizes the hard drive, the reason is software in nature and lies in the master boot record (MBR) - either damaged or missing. Unlike the fix options discussed above, this situation is relevant for both Windows 7 and XP. After booting from the installation disk, run the command in the recovery console: “bootges /fixmbr” (for Windows 7) or “fixmbr” (for Windows XP).
Driver error
Windows critical error messages, which are called “BLUE Screen of Death” because of the background color, are quite common problems in Windows XP, but in Windows 7 they tried to make the system more reliable in this regard. Reason BSoD There may be malfunctioning hardware, such as RAM. Most often, early boot stage BSOD messages appear after updating device drivers and contain the text “DRIYER_IRQL_NOT_ LESS_OR_EQUAL” along with a file name with the SYS extension. To delete problematic driver via Device Manager, you can try to start Windows in safe mode, since it uses a minimal set of drivers. To do this, press the “F8” key while loading the OS and select “Safe Mode”. If the Blue Screen of Death still appears when booting into Safe Mode, you need to revert to a previous version of the driver that did not cause problems. This can be done using a restore point, if one was created previously. In Windows 7, to do this, press the “F8” key while the OS is loading and select “Troubleshoot computer problems” in the menu that appears. After this, you will be taken to the exact same “Recovery Options” menu as when using the Windows installation disc. Next is the “System Restore” item, where you can select one of the available rollback points.
Corrupt bootloader file
An error like “Windows could not start because the following file is missing or corrupt: Windows\System32\filename.dll” is specific only to the Windows XP operating system. It may be caused by a damaged or missing Boot.ini boot configuration file, which is not used in the new OS version. You can solve the problem using the “bootcfg /rebuild” command in the Windows XP recovery console, which will correct the existing or create a new Boot.ini file. The absence of other files in the system, primarily drivers with the SYS extension, occurs in both Windows 7 and XP. The most effective way to solve the problem is to return the file to its place by looking for a copy of it on the Windows installation disk, borrowing it from another computer with the same OS version, or looking for the file by typing its name in any Internet search engine. If you don’t have a second PC at hand, then to search, download and copy files you will need a LiveCD with an OS that does not require installation. One of the most convenient options is. The exceptions are the system registry files System, Software, SAM, Security and Default, which are stored in the C:\windows\system32\config folder. It will not be possible to replace them with copies from another computer, so the only option is to roll back to a restore point. In Windows XP, to do this, you first need to load the operating system with at least standard registry branches, and only after that start the OS regeneration process. To do this, go to the Windows XP recovery console, as described above, and run a number of commands (take the System registry file as an example):
- md tmp
- litter c:\windows\system32\config\system with:\
- windows\tmp\system.bak
- delete c:\windows\system32\config\system
- litter c:\windows\repair\system c:\windows\
- system32\config\system
Diagnostic and repair utilities
Many Windows boot problems can be caused by bad hard drive sectors (badblocks). The MHDD program, which runs from the disk, will help you check your hard drive (the image can be downloaded from the link). In the program menu, you need to select the hard drive number from the list and start scanning sectors for errors and correcting them - “Remap | ON". Bad blocks (broken blocks), as a rule, are concentrated at the beginning of the hard drive, so it is worth moving the OS partition away from the problem area. Suitable for this boot disk with the partition editor MiniTool Partition WIZard NOT. (in the program menu, select “Partition 1 Move/ Resize”). BSOD can also be related to RAM. A free application allows you to test RAM modules
There are at least three common errors that lead to problems loading Windows 7. When errors occur, the system displays a short message on the monitor screen indicating the problem. It is these small guidelines that we will be guided by when solving problems that arise.
Perhaps the most popular error is Disk boot failure, insert system disk and press Enter
It is characterized by the following situation: you turn on the computer, but instead of the usual loading of the Windows 7 operating system, this message is displayed to you. It means that the system has recognized the drive from which it starts as a non-system drive, that is, according to Windows 7, there are no system files necessary to run it on this drive. This can be caused by various reasons. Let's look at the most common ones.
Possible option. A disc was inserted into the DVD-ROM or a flash drive was connected and your BIOS is configured so that by default it sets the launch of one of these media. As a result, the system cannot find the files it needs to run on a flash drive or DVD and reports an error.
Elimination. You should try disconnecting absolutely all external storage devices: phones, memory cards, flash drives and external drives. After this, you should turn on the computer again. Most likely, the system will start correctly this time.
It may be that the recommendations provided above will not help. In this case, you need, firstly, in the BIOS settings to set your system drive as the default startup device. And secondly, you should make sure whether the BIOS detects your system disk at all. It may be that it is out of order.
If the system correctly displays the system disk, it is within your power to take advantage. We will touch on this a little later, at the end of the article.
If the system does not display your main hard drive, you can try disconnecting it and connecting it back, or into the slot next door, if present.
Other problems can also lead to this error, for example, viruses, etc. In any case, it is best to first check the methods that we have mentioned. Most likely they will work. If not, then feel free to go to the end of the article, in which we indicated step-by-step troubleshooting for Windows 7 problems using the utility.
Error BOOTMGR is missing
Due to this error, you will also not be able to start Windows 7 correctly - a message on a black screen - BOOTMGR is missing. This problem can also be caused by various reasons, including all kinds of viruses. It can be caused by erroneous actions of an inexperienced user who accidentally changed the boot record of the hard drive. Also, physical problems of the HDD are often the cause of this error.
Elimination. Check whether the hard drive on which the system is installed is working properly. Seek help from the Windows 7 recovery environment, which is discussed below.
Error NTLDR is missing. Press Ctrl + Alt + Del to restart
This problem manifests itself in almost the same way as the previous one. You should also use the Troubleshooting Environment to resolve this issue.
When starting Windows 7, the user sees only a black screen and a mouse pointer
If, when the system starts, the usual desktop with the start menu does not load, and all we can see is the mouse pointer, then everything is not so difficult and in the vast majority of cases it is easy to fix. Very often this error occurs if you, using an antivirus program, got rid of some serious virus that had already caused trouble and these same troubles were not fully corrected by the antivirus program.
Elimination. Restart your computer and as soon as the mouse pointer appears, press Ctrl + Alt + Del. The Task Manager will immediately appear.
In it you need to select the “File” menu in which to create a new task (execute). A dialog box will appear, in which you should enter the regedit command and press Enter. This will launch the Windows 7 system registry editor.
We will need to look through the sections in the editor:
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows NT/Current Version/Winlogon/
- HKEY_CURRENT_USER/Software/Microsoft/Windows NT/Current Version/Winlogon/
Now you need to edit the value Shell.
With the first section, make sure that the Shell parameter is set to Explorer.exe, if this is not the case, then install it yourself. In the second case, you need to go to the section and look: if there is a Shell entry in it, then it needs to be removed from there. Now all that remains is to close the registry window and simply restart the computer. Everything should fall into place.
And so, everything that we could not eliminate on our own, we eliminate using standard system utilities
In most cases, if problems arise when starting the operating system, we can see the Windows 7 recovery screen. It is this screen that will help us in restoring the system startup. If the recovery screen does not appear on its own, then the next time the system reboots we can call it up by pressing a key F8. Select "Troubleshoot your computer" from the menu
You will see a message that will contain information that system files are being loaded, you will also be asked to select a language.
