How to fix ‘bootmgr is missing’ errors in Windows 10

How to fix ‘bootmgr is missing’ errors in Windows 10-1

If you’re a seasoned Windows user, you will have seen ‘bootmgr is missing’ errors before. Even if you’re not and have recently upgraded to Windows 10, you may also have seen the error as it occurred quite a lot by all accounts. If you are seeing bootmgr is missing errors in Windows 10, it isn’t the end of the world. I am going to list three ways of fixing it and one of them is sure to work!

Bootmgr is the Windows file that tells the operating system which hard drive to boot from and where the reserved partition is located. If this file is lost, damaged or overwritten, the ‘bootmgr is missing’ error occurs. Usually with an instruction to press Ctrl + Alt and Delete to restart your computer. It won’t help, but these fixes will.

First, make sure you don’t have a USB drive or external hard drive installed when you’re trying to boot. Some motherboards will pick these up during POST and will try to boot from them. Remove them if you’re unsure and retest.

How to fix ‘bootmgr is missing’ errors in Windows 10-2

Fix ‘bootmgr is missing’ errors in Windows 10

Follow these simple steps to address this most annoying of errors. First let us run Startup Repair which is pretty good.

  1. Insert your Windows 10 installation media into your computer and set it to boot from it.
  2. Select the language and options when you get the first screen and click Next.
  3. Select Repair your computer instead of Install at the next screen.
  4. Select Troubleshoot, Advanced options and then Startup Repair.
  5. Let Windows scan and repair.
  6. Reboot if Windows doesn’t do it itself.

How to fix ‘bootmgr is missing’ errors in Windows 10-3

This should fix the ‘bootmgr is missing’ error in the majority of cases. If it doesn’t, try this:

  1. Insert your Windows 10 installation media into your computer and set it to boot from it.
  2. Select the language and options when you get the first screen and click Next.
  3. Select Repair your computer instead of Install at the next screen.
  4. Select Troubleshoot, Advanced options and then Command Prompt.
  5. Type ‘Bootrec /fixmbr’
  6. Type ‘Bootrec /fixboot’
  7. Type ‘Bootrec /rebuildbcd’
  8. Reboot your computer normally and retest.

Those steps manually rebuilds the boot record which should allow you to boot normally. If that doesn’t work, your last resort is a system restore or system refresh.

  1. Insert your Windows 10 installation media into your computer and set it to boot from it.
  2. Select the language and options when you get the first screen and click Next.
  3. Select Repair your computer instead of Install at the next screen.
  4. Select Troubleshoot, Advanced options and then System Restore.
  5. Choose a restore point and let the process complete.
  6. Your computer should automatically reboot but do it manually if it does now.

If you don’t use system restore or don’t have a restore point, use the system refresh option instead. Just remember to select ‘Keep my data and files’ in the options.

Those are the three ways I know to fix ‘bootmgr is missing’ errors in Windows 10. Have any others you want to share?

Posted by Jamie on December 19, 2016

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