BOOTMGR error usually occurs after POST (Power On Self-Test) when there are any corrupted files, up-gradation of the operating system, loose data cables, or computer is trying to boot from the device which cannot be booted.
Fix “BOOTMGR is Missing” Error
A lot of Windows users had queries regarding this error. To resolve this issue, we landed on several solutions. Have a look:
Set Hard Disk as Primary Booting device
Usually Hard Disk is not present as Primary or first boot device, which can cause problem.
- Restart your computer using Ctrl + Alt + Del
- Then as soon as you see the windows log, start pressing F12 continuously.
- It will open up the Boot Menu.
- Under Boot option, look for Hard Disk or Hard Drive and use, arrow keys (↓ and ↑) to make Hard Disk your first boot preference.
- Then Press F10 to save your settings.
- Press Esc, now your system will get rebooted automatically.
Look for the changes made, and find if the error has been fixed.
Rebuild the BCD
- Insert the Windows installation disk drive and restart your system.
- As soon as you see the logo of Windows, press F12 continuously until it opens up a Boot Menu.
- Press Enter or any key, when Boot from CD or DVD message flashes on the screen.
- Select time, language and keyboard on the window that opens up.
- Then select Repair your Computer.
- Then System recovery option will appear, select the Windows installation drive and click Next.
- Now select Command Prompt in System Recovery option and type bootrec /rebuildbcd
- Press Enter.
- Restart your system and check for changes.
Run Startup Repair
- First insert USB drive or Disk drive into your computer.
- Using Ctrl + Alt + Del, restart your system.
- When you see logo, press F12 Continuously until the Boot Menu pops up on the screen.
- Using up and down arrow key (↓ and ↑), choose the USB drive.
- Then a black screen will be visible with some message, press Enter.
- Then select time, language and keyboard and click Next.
- Then click on Restart your Computer at bottom left corner of your screen.
- Select Troubleshoot > Advance Settings > Startup Repair from the window that opens up.
- Lastly restart your computer.
See if it is done or not and look for the changes.
Use Easy Recovery Essentials (EasyRE)
- First download the Easy Recovery Essentials.
- Then Burn the Bootable IOS images carefully, to avoid unwanted loss.
- Now Boot up your computer from the Easy Recovery Essential USB or CD.
- Now select Automated Repair option and then click Continue.
- Once the scanning of your system’s drive has been completed, Select the drive letter for Windows installation.
- Now click on Automated Repair option.
- Now, Easy Recovery Essential will analyze your problems and will fix them.
- As soon as it completes the task, it will also provide you with the report after analyzing the problems and issues.
- Now click on Restart to reboot your system and look for the changes and find if the problem has been fixed.
Remove all the connected devices.
Disconnect all the media and devices attached to the system. It could be anything USB, Printer or any other hardware device, which is non-bootable and hence causing the problem in your system. Make sure to restart your system, after you remove all these connected devices.
These methods will certainly solve the issue. But still, you don’t find the “BOOTMGR is missing” error fixed. You need to return the computer to the factory default configuration and need to reload the Operating System.