A black screen having a message saying “Bootmgr is missing. Press Ctrl + Alt + Del to restart” appears when your computer fails to load Windows boot manager. It is one of the Windows startup errors and usually occurs when your boot partition is damaged, or the processor fails to find it.

If you are also facing such an issue, there is nothing to worry about! You can easily resolve Windows 10 bootmgr is missing issue without spending a single penny. Follow our guide to know how to fix bootmgr is missing Windows 10.

Part 1: What is Bootmgr?

A small software that loads from the volume boot code on system startup is referred to as Bootmgr. Bootmgr stands for Windows Boot Manager, responsible for starting your PC. It is usually a read-only file located on the unnamed partition of your disk or the primary partition, i.e., the C drive. The Bootmgr reads the boot configuration data and displays the boot selection menu.

Sometimes, the bootmgr fails to load for various reasons such as damaged MBR, hard disk, outdated BIOS settings, etc. Luckily, we have solutions to the “bootmgr is missing” issue.

Part 2: How to Fix Bootmgr is missing Windows 10?

1.Use PassFab Computer Managementhot

If you do not want to mess with your computer’s internal settings, the best choice for you would be PassFab Computer Management . The PassFab Computer Management is a suite that lets you control and manage your computer without compromising its privacy and security. It is able to fix black/blue screen, restarting and other crashing problems, bootmgr is missing problem on windows 10. Using this tool, you can resolve the ‘bootmgr is missing’ issue very easily in a few steps as follows.

  • Install PassFab Computer Management on any accessible PC.
  • Insert a CD/DVD or a USB drive to create bootable media.
  • Click Create boot disk now. create boot disk now
  • Select your removable media and click Next. select boot media
  • Let the process complete.
  • Once done, remove your bootable media and move to the problematic PC.

  • Plug in the bootable media.
  • Restart your PC and press the Boot Key to open the Boot menu.
    Boot Key Desktop Laptop Motherboard
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    Esc Dell ASUS, Sony Great Wall, Foxconn, ESC, SOYO, MAXSUN, Colorful, SONY, SAMSUNG, Spark, UNIKA
  • Set your device on priority, save settings, and reboot the PC.
  • When your PC restarts, you will see PassFab Computer Management’s interface.

  • Click Automated Repair. click automated repair
  • Choose the partition that needs to be repaired. Click Start Repair. select partition
  • When the repair completes, click Restart. repair complete

    When your PC restarts, Windows 10 bootmgr is missing issue will be resolved.

2.Use Startup Repair through Windows Recovery Environment (WINRE)

Windows Recovery Environment(WinRE) can also resolve the bootmgr is missing problem. All you have got to do is run the Startup Repair, and WinRE will take care of the rest. This method requires Windows installation media. You can work through this method as follows:

  • Insert the Windows 10 installation media into the computer and start it.

  • Enter the Boot Menu and boot from the installation media.

  • Once you enter Windows Recovery Environment, choose the Language, Time, Currency format, and input method. Click Next.

  • Now, you will see two options on the screen. Choose Repair your computer.

  • Choose Troubleshoot on the next screen.

  • Click on Advanced options.

  • Choose Startup Repair.

  • Now choose the Windows version that needs to be repaired.

After selecting the Windows version, Windows Recovery Environment will start repairing your PC automatically. Once the repair completes, your PC will restart, and you will no longer see Windows 10 bootmgr is missing message.

3.Rebuild Boot Configuration Data (BCD)

When the Boot Configuration Data (BCD) is missing or damaged, it also causes the “bootmgr is missing” error during startup. If this is the cause of the issue, you can rebuild the BCD with Windows Recovery Environment (WinRE) as follows.

  • Reboot your computer with Windows 10 installation media plugged in.

  • Choose Language, Time, Currency, and input method. Click Next.

  • Click Repair your computer.

  • Now choose Troubleshoot and then Advanced options.

    troubleshoot advanced-option
  • Select Command Prompt from the options list.

  • Type this command into the command prompt. bootrec /RebuildBcd

  • Type ‘Yes’ when the command prompt asks.

  • Reboot your computer when the command completes.

4.Run System Restore

  • Plug in the Windows installation disk and start your computer.

  • Boot your PC through installation media.

  • Set a Language, Time, Currency, and input method. Click Next.

  • Click “Repair your computer.”

  • Select the drive of your Windows installation. Click Next.

  • Now choose System Restore.

  • Follow the System Restore Wizard to complete the process.

  • Click on Finish to restart your computer.

If none of the proposed solutions works for you, you can perform a system restore using Windows Runtime Environment. This will reset your system to default settings while preserving your data and files from getting deleted. To follow this method, you will need a Windows installation disk. Once you have got one, follow these steps to resolve Windows 10 bootmgr is missing problem.


Starting your PC and getting stuck on an unknown error like “bootmgr is missing” is frustrating and can ruin your mood in seconds. This issue occurs when something is wrong with your disk partitions, and the processor fails to load the boot manager responsible for system startup. However, in this article, we have proposed the best solutions to how to fix bootmgr is missing Windows 10 problem. The proposed solutions include some built-in ways that Windows offers but the best yet recommended way is using the PassFab Computer Management , as it is quite easy to use and does not compromise your data.