How to fix BOOTMGR is missing Windows 10

Fix BOOTMGR is missing error

How to fix BOOTMGR is missing Windows 10: Bootmgr is missing Press Ctrl+Alt+Del to restart” is one of the most common boot error which occurs because the Windows boot sector is damaged or missing. Another reason you might encounter BOOTMGR error is if your PC is trying to boot from a drive that is not properly configured to be booted from. And in this guide, I’m going to tell you everything about “BOOTMGR” and how to fix Bootmgr is missing error. So without wasting any time let’s move forward.

fix BOOTMGR is missing Windows 10

What is Windows Boot Manager (BOOTMGR)?

Windows Boot Manager (BOOTMGR) loads volume boot code which is essential for starting Windows operating System. Bootmgr also helps to execute winload.exe, which in turns load essential device drivers, as well as ntoskrnl.exe which is a core part of Windows.

BOOTMGR helps your Windows 10, Windows 8, Windows 7 and Windows Vista operating system to start. Now you may have noticed that Windows XP is missing in the list that’s because Windows XP doesn’t have a Boot Manager instead, it has NTLDR (abbreviation of NT loader).

Now you may see “BOOTMGR is missing” error in different forms:

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"

Where is Windows Boot Manager Located?

BOOTMGR is a read-only and hidden file which is located inside the root directory of partition marked as active which is generally a System Reserved Partition and does not have a drive letter. And if you don’t have a System Reserved Partition then BOOTMGR is located on your C: Drive which is a Primary Partition.

Causes of BOOTMGR Errors:

1.Windows boot sector is damaged, corrupted or missing.
2.Hard Drive Problems
3.BIOS Problems
4.Windows Operating System issues
5.BCD(Boot Configuration data) is damaged.

Fix BOOTMGR is missing Windows 10:

Method 1: Run Automatic Repair

1.Insert the Windows 10 bootable installation DVD and restart your PC.

2.When prompted to Press any key to boot from CD or DVD, press any key to continue.

Press any key to boot from CD or DVD

3.Select your language preferences, and click Next. Click Repair your computer in the bottom-left.

Repair your computer

4.On choose an option screen, click Troubleshoot.

Choose an option at windows 10 automatic startup repair

5.On Troubleshoot screen, click Advanced option.

Click Advanced Options automatic startup repair

6.On Advanced options screen, click Automatic Repair or Startup Repair.

Command prompt from advanced options

7.Wait til the Windows Automatic/Startup Repairs complete.

8.Restart and you have successfully fix BOOTMGR is missing error, if not, continue.

Also, read How to fix Automatic Repair couldn’t repair your PC:

Method 2: Change Boot Sequence (or Boot Order) in BIOS

1.Restart your Windows 10.

2.As the computer starts to power on press DEL or F2 key to enter BIOS Setup.

press DEL or F2 key to enter BIOS Setup

3.Locate and Navigate to the Boot Order Options in BIOS.

4.Make sure the Boot Order is set to Hard Drive and then CD/DVD.

Boot Order is set to Hard Drive

5.Else change the Boot order to first boot from Hard Drive and then CD/DVD.

6.Finally, save the configuration and exit.

Method 3: Fix boot and rebuild BCD

1.Open Command Prompt and type: C:
Note: Use your Windows Drive Letter and then hit enter.

2.In Command prompt type the following commands one by one & hit enter:

a) bootrec /fixmbr    b)bootrec /fixboot    c)bootrec /rebuildbcd    d)Chkdsk /f

bootrec rebuildbcd fixmbr fixboot

3.After completing each command successfully type exit.

4.Restart your PC to see if you boot to windows.

If you get error in any above method try this:
bootsect /ntfs60 C: (replace drive letter with your boot drive letter) and again try the command which failed.

bootsect nt60 c

Method 4: Use Diskpart to fix corrupted file system

1.Again go to Command Prompt and type: diskpart

diskpart

2.Now type these commands in Diskpart: (don’t type DISKPART)

DISKPART> select disk 1
DISKPART> select partition 1
DISKPART> active
DISKPART> exit

mark active partion diskpart

Note: Always mark the System Reserved Partition (generally 100mb) active and if you don’t have a System Reserved Partition then mark C: Drive as the active partition.

3.Now type the following command and hit enter after each one:

a) bootrec /fixmbr    b)bootrec /fixboot    c)bootrec /rebuildbcd    d)Chkdsk /f

bootrec rebuildbcd fixmbr fixboot

4.Restart to apply changes and see if the method worked.

Method 5: Repair Windows Image

1.Open Command Prompt and enter the following command:

DISM /Online /Cleanup-Image /RestoreHealth

cmd restore health system

2.Press enter to run the above command and wait for the process to complete, usually, it takes 15-20 minutes.

NOTE: if the above command doesn’t work then try this: Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows
or Dism /Online /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows /LimitAccess

3.After the process is completed restart your PC.

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That’s it you have successfully fix BOOTMGR is missing Windows 10 issue. If you still have any question regarding this post feel free to ask them in the comment section.

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