This is one of the most common startup problems you might encounter in the operating system. Did you receive the error from Bootmgr Missing (Bootmgr is Missing)?
In this article, I will tell you how you can fix this message on Windows 10/8/7.
What is BOOTMGR?
It is the abbreviation of Windows Boot Manager, a program that runs when your PC starts up, and load your operating system from hard drive.
It is a file in read only located in the boot directory of the active partition. When you turn on your computer, the BOOTMGR read them configuration data and displays the OS selection menu.
First of all, we will show you the many reasons why you receive this message directly after booting your computer.
- Files corrupt and poorly configured
- Problems of the Hard disk and upgrading the operating system
- Hard disk sectors corrupt (hardware related)
- BIOS obsolete
- Cables damaged or loose hard drive.
But it happens that the file that is corrupt or misconfigured because of some reason. Windows will be unable to start or load operating system and display messages like:
- “BOOTMGR is Away Press Ctrl Alt Del to restart”
- “BOOTMGR is missing: Press any key to restart”
- “BOOTMGR image is corrupted. The system cannot start ”
- “Cannot find BOOTMGR” (Bootmgr is Missing)
If you also get one of these messages while booting your machine, here are some helpful solutions to get rid of it.
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Solution 1: Disconnect all removable devices
The misconfigured BIOS / UEFI settings and a flash disk not ejected can cause this error and prevent Bootmgr to run.
This is because BIOS settings have been configured to use one of the removable devices from which it starts (for example, a USB key, external hard drive Where DVD), and not internal hard drive where the system is installed.
While BIOS look for the startup manager on that device and cannot find it (that’s why it displays the message “Bootmgr Absent”). D
In this case, you just have to to stop the PC and eject all removable devices. After that start your PC again and check if the error persists.
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Solution 2: Change the boot order options in BIOS
If you have disconnected all removable devices from the PC and you are still facing this error “Bootmgr absent” during boot, then you need to check the order in the BIOS.
This method is quite similar to Solution 1, but it can help you if you are using 2 or more hard drives.
As we have already mentioned above, you have a special setting in the BIOS, which is responsible for boot order of the OS.
If you are faced with this message, press Ctrl + Alt + Delete and when the computer starts to boot, you have to press the button several times F12 button (this can work for all Motherboards and he is obliged to launch the menu).
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Solution 3: Perform Computer Repair / Automatic Repair
Note : If you are Win 7 users, press F8 for advanced options to perform the repair.
In the screen Advanced boot options, click on Repair the computer. This will restart your Windows to start the diagnostic process. And analyze the different settings, configuration options, and especially search for system files :
- Pilots missing / corrupt / incompatible
- Files missing / corrupted system
- Settings missing / corrupted configuration
- Register corrupt
- Metadata corrupted disk (master boot record, partition table or sector)
- Problem installing the update
Wait until the process will be completed, After that Windows will restart normally without error from BOOTMGR Absent.
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Solution 4: Repair corrupt BOOTMGR file
If the repair failed to fix the error, press Ctrl + Alt + Del to restart Then repair corrupt / damaged BOOTMGR file by performing the steps below.
On the screen Advanced boot options Click on command prompt which will allow you to launch the file Bootrec.exe to repair the Master Boot Record on your Windows.
Run the command below:
Bootrec / fixMbr
To repair Master Boot Record corruption issues, or when you need to clean up the MBR code. This command will not overwrite the existing partition table on the hard drive.
Bootrec / fixBoot
If the boot sector has been replaced with another non-standard code, the sector is damaged, or when you installed an older version of the operating system alongside another newer version
Bootrec / ScanOS
This option scans all disks to find all compatible installations and displays entries that are not in the BCD.
After typing these commands, exit to close Command Prompt and restart Windows and check if the issue is resolved.
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Solution 5: Rebuild BCD using CMD
If after performing the above solutions, you still have the same problem, Bootmgr Absent ?
Run the following commands to export and erase BCD memory and use the command again RebuildBcd and try to start Windows 10.
Open again l‘command prompt from advanced boot options and run the commands below one by one.
BCDedit / export C: BCD_Backup
VS:
Boot CD
Attrib BCD -s -h -r
Ren C: boot bcd bcd.old
Bootrec / RebuildBcd
Press on Y to confirm the addition of Windows 10 to the list of bootable operating systems on your computer. Type exit to close the Command Prompt window and restart your computer.
Solution 6: Repair the Windows image
Open again command prompt from advanced boot options and run the command below. Repair the Windows image that can cause this error.
DISM / Online / Cleanup-Image / RestoreHealth
After running the command, type the command sfc / scannow to fix corrupt / missing system files. Wait until the command to complete. After restart the system and check if Windows starts correctly.
These are a few solutions the most applicable to repair the error Bootmgr Absent. Hope the solutions solve the problem for you.