Especially after thewindows 11 upgrade, the PC refuses to turn on and displaysBootmgr is missingerror.
This error usually occurred due to corrupt and misconfigured files on the PC.
Contents
What is Bootmgr and how it works?
Or we can say, bootmgr is fully responsible for starting your computers Operating System.
BOOTMGR loads volume boot code automatically and starts your operating system from the hard drive.
Sometimes BOOTMGR error messages could be sparked by unplugged, loose, or malfunctioning power or controller cables.
Again sometimes replacing the SATA or PATA cable fix the issue as well.
Thus like remove all the connected media to your PC, and reboot your gear.
To do this Press Ctrl+Alt+Del to power cycle your machine.
If you are not sure, consult the manufacturer of your gear.
After making changes Press F10 on the keyboard to save prefs and exit BIOS.
Then your PC will restart automatically, now test whether it could boot into your operating system successfully.
If not, try the next solution.
Before performing any troubleshooting steps we recommend first to perform the startup repair.
you’re free to read our guide onhow to create a bootable USB drive with Windows.
This will display all available Tools as shown below image.
Now select Startup Repair.
This will restart the windows and start the repair process.
During the repair process, this will check below points.
Wait until the Windows Automatic/Startup Repair is complete.
After that Restart and you have successfully fix BOOTMGR is missing error.
Still getting the same error follow the next step.
The BOOTMGR is missing oops message occurred toyour computer probably due to the corrupted MBR.
This data can be rebuilt using a few commands,Access advanced optionsand grab the command prompt form there.
When the Command Prompt window opens, typebootrec /RebuildBcdand press Enter.
In addition, launch the following commands as well.
Bootrec /fixmbrBootrec /fixbootbootrec /scanos
The above commands repair the bootmgr Errors.
Now repair the hard disk for Errors by performing the bellow command.
Chkdsk /f /r
throw in this command and hit enter key to repair hard disk errors and bad sectors.
If still the same error performs the next step.
Lets See How to reactive
First, you need toAccess Windows Advanced Boot options.
Here you will get the option to Open Advanced Command.
list disk
This will list all of your connected drives on your setup.
select disk 0
Note: opt for Hard Disk Drive where your windows is installed.
list partition
This command will show you all the partitions created in that disk that youve selected.
So, select only that partition where your windows is installed.
Note: Never Select 100 MB, 350 MB And 500 MB Partitions.
active
That will make your partition active.
These are some best working solutions to fix Bootmgr missing startup Errors on Windows 10 or 11 computers permanently.
Have any query suggestions feel free to comment below.
