In the Command Prompt, type “cd” or “C.” Once this has been done, restart your PC and see if the error has been resolved. This will open a command prompt in the C: drive. If you don’t have the Windows installation disc, you can use the boot media.Īnother easy way to fix the problem is to boot into the Advanced Startup Options menu in Windows 7 or Windows 10. To fix Bootmgr is compressed in Windows 7, you can also use the installation disc. Once in the Command Prompt, type bootrec /rebuildbcd. When you do so, the System Recovery Options window will open. To fix BOOTMGR is compressed in Windows 7, you will need to use the Command Prompt (CMD). To resolve this problem, you will need to use a software called Fix Genius. If the error occurs after you have decompressed Bootmgr, your PC will not boot properly. This error is caused by a problem with the file itself, which Windows is required to decompress before it can be used. When you are attempting to boot your computer in Windows 7, you will notice that Bootmgr is compressed.

Repair bootmgr windows 7