The boot menu failed as required. Techniques for editing the start menu

As you know, quite often when all sorts of failures occur when starting Windows operating systems, it is necessary to use a special start menu in which you select the desired action to restore the operating system or additional operations that allow you to perform more fine tuning. But not all users clearly understand how to correctly use the Windows 7 boot menu, what this or that item is used for, how to customize the list of displayed actions or troubleshoot problems if the menu itself is inaccessible when the system starts. Read about all this and much more in the material below.

Windows 7 operating system boot menu: what is it and what is it used for?

Let's begin with this menu For the most part, it is used precisely in those situations when the operating system installed on the computer as the main one, for some reason, crashes, loads incorrectly, or does not start at all. Using this toolkit allows you to bring the system back to life, and, as is already clear, for this you do not need to start from removable media with a distribution kit or recovery environment, since the operating system can correct most errors and problems own funds. And despite the fact that the contents of the main list and menu additional options Windows 7 downloads are standard for all versions of this OS (the same by default), they can be rebuilt based on your own needs and considerations: change some items, add your own, disable unused tools etc. We’ll look at how to do this or even restore the functionality of the toolkit itself if it fails a little later, but for now we’ll focus on how to call up the described menu, what options for action and in what situations can be used.

How to enter the Windows 7 boot menu?

Ever since the very first modifications of Windows were released, which made it possible to take “snapshots” of the OS state at a certain point in time and restore using them system components and user data, they specifically provided for the use of special tools through which the desired result could be achieved without reinstalling the entire system. This tool is still presented in the form in which it was originally developed (with the exception of the background color and access method in the eighth and tenth modifications). But how to bring up the Windows 7 boot menu? In the seventh modification and versions below, this is done by pressing the F8 key at the moment when the start screen with brief characteristics main equipment (CPU and RAM), but the logo indicating the start of the operating system has not yet appeared. At the same time, pressing a key once almost never desired result does not work, so you have to press it several times.

Main boot menu items

So, you have entered the Windows 7 boot menu. What interesting things can you find here? First of all, you should pay attention to the fact that it is divided into several main information blocks. The first is the troubleshooting option, which launches the recovery environment (RE) and allows you to select required action. But sometimes there may not be such a point. You can restore it, but more on that later. Next comes the block corresponding to the launch safe mode (Safe Mode) in several versions. The list is completed by a block of additional operations, of which users for the most part use only the start point of the last working configuration (restore point), without paying attention to the other tools. And their use may be required quite often.

What should be used and in what cases?

Now let's briefly go through all three blocks present in the Windows 7 boot menu. The troubleshooting item is used if Safe Start does not work correctly or does not start at all.

When you click on this item, you have the opportunity to use the following operations:

• startup recovery, including from backup copy(not to be confused with the rollback point);
• performing a standard rollback from a manually selected restore point;
• checking RAM using system tools;
• use of diagnostic tools SFC systems;
• perform disk check;
• editing the registry, etc.

Safe start allows you to boot the system with restrictions on services and drivers that start automatically, which allows you to find faulty software components and restore their functionality. Support command line is designed for those situations when you know exactly which command is performing this or that action, or when other safe start options do not work. Start from network drivers necessary if you may need access to the Internet or communication with other computers via a local network.

Keeping a boot log allows the system to independently eliminate some failures based on recording recorded events. Everything is clear with the last known good configuration (it is selected to perform a quick rollback, if possible). Reducing the screen resolution (but without entering Safe Mode) is used if crashes are observed due to problems with drivers graphics adapter or corresponding screen settings.

The remaining modes are, by and large, not needed by ordinary users, but are intended for system specialists, although if failures occur due to the lack of device drivers digital signature, deactivating its check can also give instant results.

Is it possible to remove additional download options?

Some users seek to customize (personalize by installing own settings) start menu and try to remove the third block described above from it. It should be said right away that if you don’t know exactly what such actions will lead to, it’s better not to do this, because then you won’t be able to quickly roll back the system (you’ll have to choose the tools presented for the first point). However, you can disable it. How to remove Windows 7 boot menu related to advanced options?

To do this, in the computer properties (of course, in a fully loaded system), you need to call up the additional options item and go to the boot and recovery section, then in the window that appears, uncheck the option to display additional recovery options). When you restart the system and call up the Windows 7 boot menu again, the third block will no longer appear. If for some reason you need it again, you can activate it by performing the reverse action.

Techniques for editing the start menu

Now let's see how to edit the Windows 7 boot menu. For this, the system itself provides three main options (at least):

• setting the minimum parameters in the system configuration;
• change additional options systems;
• using the BCEDIT toolkit via the command console.

The first two methods allow you to change only basic settings, but the use of the third makes it possible not only to rebuild the menu itself at your discretion, adding to it additional item or removing unnecessary ones, but also doing some accompanying actions, which are not available in the GUI.

Actions with system configuration

The simplest editing of the Windows 7 boot menu is done in a special section called configuration, which is called from the Run console (Win + R) by entering the abbreviation msconfig. The main parameter here is to remove unused operating systems from the list of installed operating systems. This is necessary for those cases when you have several OSes and at each start you are prompted to select the OS to load.

You can leave only the one that will be loaded by default as the main one.

Along the way, we can note the launch of accompanying modes (safe start, recovery environment, loading without GUI etc.), which upon restart will be activated automatically without the need for them manual start in the start menu. But this is inconvenient because in such modes the system will boot constantly, and to set a normal start, the options will have to be changed to their original values.

Configuring advanced system settings

Additional parameters have already been briefly discussed. But here you can also use the ability to display or hide the list of installed operating systems, which fully duplicates the previous method. You can also set the desired timeout time, activate logging, enable or disable automatic restart in case of system failure, etc. As is already clear, any of these actions makes adjustments to the start menu.

Command Line and BCDEDIT Toolkit

Finally, the most powerful tool The BCDEDIT toolkit is considered to be a tool that allows you not only to edit the start menu, but also to restore it if failures occur. And you can call it only through the command line, which requires starting as an administrator to perform most of the actions provided for the entire toolkit. The console can be launched from the “Run” console using cmd command and checking the checkbox on the start point as administrator. If this item is missing, a similar operation can be performed through the “Task Manager” by creating new tasks in the file menu.

We will not list all possible commands, operators and attributes.

If you wish, you can use an additional short help system provided for this toolkit (with examples), which can be accessed by running main team with an additional attribute “bcdedit /?”, entered without quotes.

By the way, with the help command console You can return the troubleshooting item by running the combination “reagent /enable” (without quotes).

Typical problems with the start menu

As for failures when trying to access the start menu, unfortunately, they occur quite often.

At the same time, a notification is displayed on the screen stating that the installed OS was not found, and the user must use to download system disk, or it is proposed to correct errors using the system, if it is defined. This Windows 7 Boot Menu Glitch Indicates Corruption system files bootloader. Restore functionality of both systems and start menu in most cases, it is really only possible when booting from removable media, which must be set as a priority device in the BIOS parameters.

At startup, you can use either an automated recovery tool, the command line, or additional tools (for example, diagnosis of hard disk).

Automatic boot repair

Not every Windows 7 boot menu glitch can be resolved using automated tools, but it's worth a try. To do this, after starting from removable media, you just need to go to the recovery item and select automatic recovery while loading. It is quite possible that this will help in case of non-critical failures.

Bootloader recovery

A much more effective tool is the Botrec.exe applet with additional attributes. To use it from an installation or recovery disk, you need to run the command line, and then enter following commands, pressing Enter key after each of them:

• bootrec /fixmbr;
• bootrec/fixboot;
• bootsect /nt60 ALL /force /mbr;
• exit.

Note: all commands are entered without punctuation. If this sequence does not produce any effect when executed, you can try to completely rewrite the bootloader by running the command “Bootrec.exe /RebuildBCD” (again, without quotes).

Troubleshooting hard drive problems

Apparently, there is no need to say that errors on the hard drive or damage to boot sectors and areas can also lead to countless failures. System Tools can be used to identify and troubleshoot problems, but they look much more effective software products from third party developers.

So, to restore the Windows 7 boot menu, errors in the operation of which were associated specifically with problems of hard disk, you can first create startup media with Hiren’s BootCD utility, which has enough tools to fix failures. The toolkit is used for the hard drive Hard Disk Tools, included in the main set. However, you can experiment with additional tools from the proposed package.

Note: if HDD damaged to such an extent that it is impossible to restore it by any means, try using the utility HDD Regenerator, which, according to its creators, is capable of resuscitating any hard drive through the use of a unique surface magnetization reversal technology.

As you know, quite often, when all sorts of failures occur when starting Windows operating systems, it is necessary to use a special start menu, in which you select the desired action to restore the operating system or additional operations that allow you to perform more fine-tuning. But not all users clearly understand how to correctly use the Windows 7 boot menu, what this or that item is used for, how to customize the list of displayed actions or troubleshoot problems if the menu itself is inaccessible when the system starts. Read about all this and much more in the material below.

Windows 7 operating system boot menu: what is it and what is it used for?

Let's start with the fact that this menu is mostly used precisely in those situations when the operating system installed on the computer as the main one, for some reason, crashes, loads incorrectly, or does not start at all. Using this toolkit allows you to bring the system back to life, and, as is already clear, for this you do not need to start from a removable media with a distribution kit or recovery environment, since the operating system can correct most errors and problems with its own means. And despite the fact that the contents of the main list and menu are standard for all versions of this OS (the same by default), they can be rearranged based on your own needs and considerations: change some items, add your own, disable unused tools, etc. How to do it We’ll look at making or even restoring the functionality of the toolkit itself if it fails a little later, but for now let’s focus on how to call up the described menu, what options for action and in what situations can be used.

How to enter the Windows 7 boot menu?

Ever since the very first modifications of Windows were released, which made it possible to take “snapshots” of the state of the OS at a certain point in time and use them to restore system components and user data, they specifically provided for the use of special tools through which it would be possible to achieve the desired result without reinstalling the entire system. This tool is still presented in the form in which it was originally developed (with the exception of the background color and access method in the eighth and tenth modifications). But how to bring up the Windows 7 boot menu? In the seventh modification and versions below, this is done by pressing the F8 key at the moment when the start screen with brief characteristics of the main equipment (CPU and RAM) disappears, but the logo indicating the start of the operating system has not yet appeared. At the same time, pressing a key once almost never gives the desired result, so you have to press it several times.

Main boot menu items

So, you have entered the Windows 7 boot menu. What interesting things can you find here? First of all, you should pay attention to the fact that it is divided into several main information blocks. The first option is the troubleshooting option, which launches the recovery environment (RE) and allows you to select the required action. But sometimes there may not be such a point. You can restore it, but more on that later. Next comes a block corresponding to launch in several options. The list is completed by a block of additional operations, of which users for the most part use only the start point of the last working configuration (restore point), without paying attention to the other tools. And their use may be required quite often.

What should be used and in what cases?

Now let's briefly go through all three blocks present in the Windows 7 boot menu. The troubleshooting item is used if Safe Start does not work correctly or does not start at all.

When you click on this item, you have the opportunity to use the following operations:

• startup restoration, including from a backup copy (not to be confused with a rollback point);
• performing a standard rollback from a manually selected restore point;
• checking RAM using system tools;
• use of SFC system diagnostic tools;
• perform disk check;
• editing the registry, etc.

Safe start allows you to boot the system with restrictions on services and drivers that start automatically, which allows you to find faulty software components and restore their functionality. Command line support is designed for those situations when you know exactly which command is performing a particular action, or when other safe start options do not work. Starting with network drivers is necessary if you may need to access the Internet or communicate with other computers over a local network.

Keeping a boot log allows the system to independently eliminate some failures based on recording recorded events. Everything is clear with the last known good configuration (it is selected to perform a quick rollback, if possible). Reducing the screen resolution (but without entering Safe Mode) is used if failures are observed due to problems with graphics adapter drivers or related screen settings.

The remaining modes are, by and large, not needed by ordinary users, but are intended for system specialists, although if failures occur due to the lack of a digital signature in device drivers, deactivating its verification can also give an instant result.

Is it possible to remove additional download options?

Some users seek to customize (personalize by setting their own settings) the start menu and try to remove the third block described above from it. It should be said right away that if you don’t know exactly what such actions will lead to, it’s better not to do this, because then you won’t be able to quickly roll back the system (you’ll have to choose the tools presented for the first point). However, you can disable it. How to remove Windows 7 boot menu related to advanced options?

To do this, in the computer properties (of course, in a fully loaded system), you need to call up the additional options item and go to the boot and recovery section, then in the window that appears, uncheck the option to display additional recovery options). When you restart the system and call up the Windows 7 boot menu again, the third block will no longer appear. If for some reason you need it again, you can activate it by performing the reverse action.

Techniques for editing the start menu

Now let's see how to edit the Windows 7 boot menu. For this, the system itself provides three main options (at least):

• setting the minimum parameters in the system configuration;
• changing additional system options;
• using the BCEDIT toolkit via the command console.

The first two methods allow you to change only basic settings, but using the third makes it possible not only to rebuild the menu itself at your discretion, adding additional items to it or removing unnecessary ones, but also to perform some related actions that are not available in the graphical interface.

Actions with system configuration

The simplest editing of the Windows 7 boot menu is done in a special section called configuration, which is called from the Run console (Win + R) by entering the abbreviation msconfig. The main parameter here is to remove unused operating systems from the list of installed operating systems. This is necessary for those cases when you have several OSes and at each start you are prompted to select the OS to load.

You can leave only the one that will be loaded by default as the main one.

Along the way, you can note the launch of accompanying modes (safe start, recovery environment, loading without a graphical interface, etc.), which upon restart will be activated automatically without the need to manually launch them in the start menu. But this is inconvenient because in such modes the system will boot constantly, and to set a normal start, the options will have to be changed to their original values.

Configuring advanced system settings

Additional parameters have already been briefly discussed. But here you can also use the ability to display or hide the list of installed operating systems, which fully duplicates the previous method. You can also set the desired timeout time, activate logging, enable or disable automatic restart in case of system failure, etc. As is already clear, any of these actions makes adjustments to the start menu.

Command Line and BCDEDIT Toolkit

Finally, the most powerful tool that allows you not only to edit the start menu, but also to restore it if failures occur, is the BCDEDIT toolkit. And you can call it only through the command line, which requires starting as an administrator to perform most of the actions provided for the entire toolkit. The console can be launched from the “Run” console using the cmd command and checking the start box as administrator. If this item is missing, a similar operation can be performed through the “Task Manager” by creating a new task in the file menu.

We will not list all possible commands, operators and attributes.

If you wish, you can use the additional quick help system provided for this toolkit (with examples), which can be accessed by executing the main command with the additional attribute “bcdedit /?”, entered without quotes.

By the way, using the Shell, you can return the troubleshooting item, for which you need to run the combination “reagent /enable” (without quotes).

Typical problems with the start menu

As for failures when trying to access the start menu, unfortunately, they occur quite often.

In this case, a notification is displayed on the screen that the installed OS is not found, and the user must use the system disk to boot, or it is offered to correct errors using the system, if it is defined. This Windows 7 boot menu crash indicates that the bootloader system files are corrupted. In most cases, restoring the functionality of both the system and the start menu is really only possible when booting from removable media, which must be set as a priority device in the BIOS parameters.

At startup, you can use either an automated recovery tool, the command line, or additional tools (for example, diagnostics hard drive).

Automatic boot repair

Not every Windows 7 boot menu glitch can be resolved using automated tools, but it's worth a try. To do this, after starting from removable media, you just need to go to the recovery item and select automatic recovery at boot. It is quite possible that this will help in case of non-critical failures.

Bootloader recovery

The Botrec.exe applet with additional attributes is considered a much more effective tool. To use it from an installation or recovery disk, you need to launch the command line, and then enter the following commands, pressing the Enter key after each of them:

• bootrec /fixmbr;
• bootrec/fixboot;
• bootsect /nt60 ALL /force /mbr;
• exit.

Note: all commands are entered without punctuation. If this sequence does not produce any effect when executed, you can try to completely rewrite the bootloader by running the command “Bootrec.exe /RebuildBCD” (again, without quotes).

Troubleshooting hard drive problems

Apparently, there is no need to say that errors on the hard drive or damage to boot sectors and areas can also lead to countless failures. System tools can be used to identify and troubleshoot problems, but software products from third-party developers seem to be much more effective.

So, to restore the Windows 7 boot menu, errors in the operation of which were associated specifically with hard drive problems, you can first create startup media with Hiren’s BootCD utility, which has enough tools to correct failures. For the hard drive, the Hard Disk Tools, included in the main set, are used. However, you can experiment with additional tools from the proposed package.

Note: If your hard drive is damaged to such an extent that it cannot be repaired by any means, try using HDD utility Regenerator, which, according to its creators, is capable of reviving any hard drive through the use of a unique surface magnetization reversal technology.

Error 0xc000000f can come to you quite suddenly - when starting your Windows OS. Exactly at the moment when you least expect it. There are no particularly noticeable symptoms that predict the appearance of this problem. Just one day, your computer, the next time you start the system, will show you the following information:

Windows failed to start. This may be due to a recent hardware or software configuration change. To resolve the error:

Insert your Windows boot disk and restart your computer.
Select your language options, and then click Next.
Select "Repair your computer".

If this disk is missing, contact your system administrator or your computer manufacturer.

Status: 0xc000000f

Details: The boot menu failed because the required device is not available.

Reasons for the error

You don't have to look far for a list of reasons, since the error message already makes a lot of things clear. Errors such as 0xc000000f appear mainly due to the fact that something happened to the Windows Boot Loader, which led to the inability to load the OS, or due to some problems with the computer’s disk. There are a number of other reasons, but they are very difficult to determine without the help of a technician.

So, to solve the problem and perform most of the methods that will be described below, you need to have a Recovery Disk with the Windows operating system, since we will use it to try to perform a recovery.

To do this, simply follow this link to the official Microsoft website and read their official article on “Creating a System Repair Disk.” Once you have a recovery disk in your hands, then proceed to the methods below.

Solution methods

Method #1 Disabling all peripherals

The next tip may seem quite strange, but some users claim that disconnecting peripherals from their computer, i.e. mice, speakers, gamepads and other non-critical equipment for the system helped them overcome error 0xc000000f.

This may be due to the fact that the computer has a faulty driver for specific device and it does not allow the system to boot normally. Disconnect everything from your PC that is not necessary to start it (except, perhaps, the monitor) and try booting into Windows again.

Method #2 Load Last Known Good Configuration

Obviously, the current state of your system is not its most stable state. In this case, you can try a very simple solution - download the latest successful configuration. With this boot option, you can restore your system to its original, working state.

To load the Last Known Good Configuration, do the following:

• Restart your computer.
• While the system has not entered the boot phase, press the button F8 to enter the Windows Advanced Boot Options Menu.
• Select "Load Last Known Good Configuration (with working settings)."

To be honest, this method of solving loading problems rarely brings any results, but it’s worth trying to fix error 0xc000000f with it.

Method No. 3 Startup recovery

The next method will require you to use the already mentioned recovery drive, which you will need to boot through. So do this:

• So, first you will need to boot through the recovery drive. To do this, go to the BIOS and set the first boot priority not to the hard drive, but to DVD-RW or flash media (depending on what you used when creating the recovery disk).
• Once you are done with prioritization, insert the recovery tool into the system and reboot.
• Instead of booting from your hard drive, you will be taken to the Recovery Environment. Select the language you want to install, time format, currency format, and input method. Then click Next.
• Click on the "System Restore" button.
• Choose yours operating system and click Next.
• A menu for selecting a recovery tool will appear in front of you. Select Startup Repair.

After this, the process of scanning and attempting to fix the problems found will begin. Once it ends, restart your computer and check for error 0xc000000f.

Method No. 4 Bootloader recovery

As mentioned at the beginning of the article, error 0xc000000f can be caused by corruption Windows boot loader. If this is causing the problem, then you can try bootloader recovery. To do this, do the following:

• Boot into the Recovery Environment again as shown in the previous method.
• Get to the recovery tool selection menu. This time select "Command Prompt".
• Enter the command into the command line Bootrec.exe and press Enter.
• You will see a list of commands for Bootrec.exe that you can execute. We recommend entering the commands bootrec/fixmbr, bootrec/fixboot, bootsect /nt60 ALL /force /mbr, exit, pressing Enter after each one.

After running these commands, restart your computer and check if the 0xc000000f error is still there. booting Windows.

Method #5 Checking and fixing disk problems using Hiren’s BootCD utility

This method is a little more complicated than all the previous ones, relatively speaking. You will need to create another boot disk, but only now with the utility Hiren's Boot CD. Given software can check your hard drive and fix any problems found on it, if any.

• Follow this link and download latest versionHiren's Boot CD. Once you download the utility, you will need to burn it to a disk or USB storage.
• Now you need to boot your system through the burned disc, just like you did earlier with the Recovery Tool.
• When you boot from this disk, the program menu will appear in front of you Hiren's Boot CD. Select "Dos Programs"
• Now select the sixth menu item called “Hard Disk Tools...” (hard disk applications).
• Select the first item named “HDAT2 4.53 (Test/Repair Bad Sectors)”.
• The disc menu will appear in front of you. Select your disk (if you don’t know which one is yours, just go by the volume).
• Now select the “Check and Repair Bad Sectors” option.
• After selecting this option, the process of checking your disk will begin. It can last from several minutes to several hours. Wait for it to finish. Once it is completed, set the boot priority in your BIOS to the old value, i.e. first priority to the hard drive, and remove the disk or flash drive with Hiren's Boot CD from your computer.

We hope that the methods we described for you above helped you deal with the 0xc000000f error when loading Windows. If not, then there are two more options: reinstalling Windows and visit to service center because something could happen to your hard drive.

You see error 0xc0000225 in Microsoft Windows 10 when trying to boot your computer? This is a common error and a huge headache because it prevents the computer from booting at all. Windows displays an error with the message " your PC failed to boot correctly and needs to be restored" "Happened unexpected error " or " the required device is not connected or unavailable". Windows system shows this error if it cannot find the correct system files to boot into (BCD). When you turn on your computer, the BCD tells Windows how to boot correctly.

This error is more common on drives that use the newer UEFI specification using the GPT partition scheme. Since this error is related to corrupted system files, it often appears after upgrading the OS, for example from Windows 7 to Windows 10. This can also happen if your computer shuts down during important update, from malware, attacking system files or even from faulty equipment. Let's look at how to fix error code 0xC0000225 in Windows 10. Follow the steps in order.

Create a Windows 10 installation disc

Like other boot errors, you cannot fix this problem from inside Windows. So, you'll need a handy Windows 10 installation disk so you can run the repair tools. Follow my instructions on . You will need a flash drive of at least 8 GB or a DVD. After creating the installation flash drive, insert it into your computer. Next, you will need to boot from a flash drive. I recommend that you refer to the manual on how to.

Automatic Windows repair

Step 1. After downloading from the installation Windows disk 10, wait until you see the screen Windows installations. Confirm your language settings, then tap " Further".When you see the screen" Install", click the link below " System Restore".

Step 2. Next you will see a menu of options; select " Troubleshooting", then " Extra options " and "". Allow the process to complete and then restart your computer.

Sha 3. Try to boot normally. If error code 0xc0000225 does not appear, then you have fixed the problem!

Run a system file and hard drive check

Step 1. If automatic Windows repair doesn't work, there are a few important things you can try: system scans on one's own. To do this, repeat the process described above to get into System Restore with installation flash drive and select " Command line". (Troubleshooting > Advanced Options > Command Prompt.)

Step 2. Run a command that checks for damaged or missing system Windows files and tries to restore them. Issue the command on the command line: sfc /scannow and wait for the process to complete. Do not close the command prompt or restart your PC, but skip to step 3 below.

Step 3. Run disk check to . Use the following command, where C: is local disk on which Windows is installed.

Step 4. Once you run both of these scans, reboot and try booting your computer again. I hope the error doesn't appear again.

Restore BCD

If you are still having problems, the next step you can try is the repair command. Boot again with installation media Windows 10 and open the menu " Extra options". This time also select " Command line" and enter the following commands one by one, pressing Enter after each:
bootrec /scanos
bootrec/fixmbr
bootrec/fixboot
bootrec /rebuildbcd

The first command scans your drive for compatible installations, which may help find the missing Windows installation. Teams two and three write down new MBR And boot sector to your disk. The last command scans Windows installations again after patches. Restart your computer again and check if error message 0xc0000225 appears.

Set the active partition

Sometimes active section may get confused or not work correctly. Windows allows you to change the active partition so you can specify the system to boot from. Run " Command line" from the installation flash drive, as done in the above ways and enter the following commands one at a time, pressing Enetr, reading carefully and see the picture below.

Diskpart - Launch the Disk Partition tool.

List disk - List of connected ones hard drives and flash drives. Remember the number of your disk. In my case, one Disk is connected" 0 ".

Select disk 0 - You need to select the hard drive on which Windows is located. Above the team we found out what it is in my case 0. If yours is different, replace it.

List partition - List of partitions on the hard drive. You need to remember the section number with type "basic" and on which Windows is installed. Since I have two types of "Main", I know approximately how many GB the disk on which Windows occupies and remember the partition with the number 1 .

Select partition 1 - I select the partition that I remembered above, and on which Windows is located.

Active - I make the section active.

Exit Command Prompt, restart your PC, and check if your problem is fixed.

1. If you are still unable to boot, you should consider hard checks disk for physical faults. Make sure the drive cable is not damaged and reconnect it if possible.
2. Check if it's worth it correctly RAM(RAM), there may be a lot of dust on it.
3. If all else fails, then just try rolling back the system to a working restore point, if you created one.
4. Try restoring Windows 10 from the installation flash drive while saving the files.