Windows Unable to start with error message like Bootmgr is missing Press Ctrl+Alt+Del to restart ? Or Getting Couldn’t find BOOTMGR Error message at startup while turn on computer / Laptop. Due to this error windows completely prevent to turn on or start normal windows. Now you have question on your mind What is this BOOTMGR and why getting BOOTMGR is missing error at startup ?

What is this BOOTMGR ?

BOOTMGR is the short form of Windows Boot Manager a program that runs when you start your PC, and loads your operating system from the hard drive. Its a Read-only Software located on Boot Directory of the Active Partition. When you turn on the computer, The BOOTMGR read the boot configuration data and displays the OS selection menu.

But some Time If due to any Reason BOOTMGR file Get corrupted or misconfigured. Windows is unable to boot or load the operating system and display message like :

1."BOOTMGR is missing Press Ctrl Alt Del to restart"
2."BOOTMGR is missing Press any key to restart" 
3."BOOTMGR image is corrupt. The system cannot boot."
4."Couldn't find BOOTMGR"

If you Are also getting one of above error message while boot windows computer, here some applicable solutions to get rid of this.

Fix Bootmgr is missing error on Windows 10

Mostly BOOTMGR error occur means the BCD(Boot Configuration data) is damaged. Another reason you might see BOOTMGR error, if your PC is trying to boot from a hard drive or flash drive that is not properly configured to be booted from. If any malfunctioning occurred within the hard drive, this will also result BOOTMGR is Missing error. Again outdated BIOS, and damaged or loose hard drive interface cables also cause bootmgr missing issue.

After understand What is BOOTMGR, use of this and Why getting Bootmgr is missing error on windows 10 /8.1 and 7 computer. Here apply bellow solutions to fix this error.

Access Advanced Options

Note : If you are windows 7 user you can skip bellow, Direct press F8 at Startup to access the advanced options to perform startup repair, repair BOOTMGR using command prompt etc.

As due to this error windows completely prevent to start or access normal windows to perform troubleshooting steps. We need to access advanced option where you will get various troubleshooting tools such as startup repair, Advanced command prompt, Startup option to boot into safe mode etc to fix startup problems.




For this you need to boot from windows installation media, If you don’t have then create one fallowing link. Now access BIOS setup by press DEL or Esc Key. Move to Boot option and Set first Boot As your Installation media CD / DVD ( Or Removable Device if you are uisng Bootable USB drive ) Then press F10 To save and Restart.

Next press any key to boot from CD/DVD or removable media. Skip the first screen by press next and click on Repair your computer option on next screen as shown bellow image.

repair your computer
repair your computer

Then click on Troubleshoot and select Advanced option, This will represent the Advanced options screen as shown bellow image.

Advanced Boot options on windows 10
Advanced Boot options on windows 10

Perform Startup Repair / Automatic Repair

Note : Note If you are windows 7 users press F8 at startup to get the advanced options to perform startup repair.

Now On Advanced options screen click on Startup Repair. This will restart the window to start diagnostic process. And analyze the various settings, configuration options, and system files Specially look for :

  1. Missing/corrupt/incompatible drivers
  2. Missing/corrupt system files
  3. Missing/corrupt boot configuration settings
  4. Corrupt registry settings
  5. Corrupt disk metadata (master boot record, partition table, or boot sector)
  6. Problematic update installation

Wait until complete the process, After that windows will restart itself and start normally without any error like BOOTMGR is missing.

Repair corrupted BOOTMGR file

If startup repair failed to fix and still getting Bootmgr is missing Press Ctrl+Alt+Del to restart Then Repair the Corrupted / Damaged BOOTMGR file by perform bellow steps. On Advanced options screen Click on command prompt which will allow you to launch the Bootrec.exe tool to repair the Master Boot Record on your Windows 10. Now perform Command bellow :

Bootrec /fixMbr

To repair Master Boot Record corruption problems, or when you need to clean the code from the MBR. This command will not overwrite the existing partition table in the hard drive.

Bootrec /fixBoot

To fix if the boot sector was replaced with another non-standard code, the boot sector is damaged, or when you installed an early version of the operating system alongside another more recent version.

Bootrec /ScanOS

This option will scan all drives to find all compatible installations and it will display the entries that are not in the BCD store.

Bootrec /RebuildBcd

Use Bootrec /RebuildBcd command to rebuild the BCD (Boot Configuration Data) store.

commands to repair BOOTMGR
commands to repair BOOTMGR

After That Type exit to close command prompt and Restart windows check Windows started normally.

Rebuild BCD using command

If after perfrom above solutions still having the same problem Bootmgr Is Missing at startup ? Then perform bellow commands to export and erase the BCD store and using the RebuildBcd command again to try getting Windows 10 to boot.




Again open command prompt from advanced options and perfrom bellow commands one by one.

BCDedit /export C:\BCD_Backup
C:
CD boot
Attrib BCD -s -h -r
Ren C:\boot\bcd bcd.old
Bootrec /RebuildBcd

Press Y to confirm adding Windows 10 to the list of bootable operating system on your computer. Type exit to Close the Command Prompt and Restart windows check started normally.

Repair windows Image

Again open command prompt from Advanced options and perform command bellow. To repair the windows image which may cause this error.

DISM /Online /Cleanup-Image /RestoreHealth

DISM restore health system
DISM restore health system

After execute command successfully type command sfc /scannow to repair the corrupted / missing system files. Wait until 100% complete the command After that Restart windows and check I hope this time windows start normally.

These are some most applicable solutions to fix Bootmgr is missing Press Ctrl+Alt+Del to restart error on Windows 10, 8, 7 computer. I hope apply above solutions fix the problem for you. Still need any help, Face any difficulty while apply above steps feel free to discuss on comments bellow. also read Fix APC_INDEX_MISMATCH BSOD Stop code 0x00000001.