Fixed BOOTMGR is missing on Windows startup


BOOTMGR is missing error is one of the most common errors, users often encountered during the Windows boot process. So how to overcome this error. Please refer to the article below the network administrator.

1. What is BOOTMGR?

BOOTMGR, also known as Windows Boot Manager, is used to control the Windows startup process. BOOTMGR helps launch winload.exe when you start your computer to load Windows operating system.

The BOOTMGR is missing error only occurs on Windows Vista, Windows 7, Windows 8, 8.1, and Windows 10. This problem does not occur on Windows XP.

When a BOOTMGR is missing error, some messages like:

  • “BOOTMGR is missing – Press any key to restart.”
  • “BOOTMGR is missing – Press Ctrl + Alt + Del to restart.”
  • “Couldn’t find BOOTMGR.”

2. Causes the BOOTMGR is missing error

There are many possible causes for BOOT MGR errors, such as startup errors, erroneous files, hard drive failures, operating system errors, outdated BIOS errors, faulty hard drive area, and cable faults. broken.

3. Fix BOOTMGR is missing on Windows

– Use Windows Startup to fix Boot Volume:

Restart your computer and press F8 or F12 to activate Boot Settings.

On the next screen you will be asked to boot your computer from the drive or USB drive.

After the boot process finishes, the Install Windows interface will appear on the screen. Select Language, Time and currency and Keyboard then click Next.

On the next interface, select Repair your computer and then choose your operating system version and click Next.

Windows 7: On the System Recovery Options window, select Startup Repair to automatically scan and fix Windows.

Windows 8, 8.1 and Windows 10: After you click Repair your computer, select Troubelshoot and select Advanced options.

Next, select Automatic Repair (Windows 8 and 8.1) or Startup Repair (Windows 10) to start fixing your Windows computer.

After the process is complete, you will be asked to restart your Windows computer. Your task is to restart the computer is complete.

– Write a new Boot Sector partition on Windows 7,8,8.1 and Windows 10:

If the “Boot Sector” partition is wrong or corrupted, your Windows computer will not boot properly and will display the BOOTMGR is missing error during startup. In this case you can fix the problem by writing a new Boot Sector partition.

On Windows 7: Access System Recovery Options and then select Command prompt.

On Windows 8, 8.1 and Windows 10: From the Repair your computer window, select Troubleshoot => Advanced options => Command Prompt.

On the Command Prompt window, enter bootrec /fixboot and press Enter. At this point, you will see The operation completed successfully.

Next, restart your computer by pressing Ctrl + Alt + Del.

Also, if BCD (Boot Configuration Data) fails, Windows will not boot. At this point, the error message BOOTMGR is missing.

– Restore Windows computer to fix BOOTMGR Error:

Corrupted Windows system files can cause a variety of errors, one of which is the BOOTMGR is missing error. In most cases when the Windows operating system fails, the blue screen of death appears.

To fix this, you can restore your computer from an Image backup.

Note: If you do not have Image backup you can not use this method.

Another possible reason is that the cause of the BOOTMGR is missing error is that the system partition of the hard drive is disabled. In this case you can use the Bootable Partition Wizard CD Free Editon to reboot your computer.

Now select the partition, click on the Partition tab select Modify and then select Activate.

In some cases, the BIOS version is too old to cause the BOOTMGR is missing error. In these cases you can upgrade to the latest BIOS version to fix the problem.