If you’re trying to install last week’s free fix for Win7 and 2008 R2, KB 4539602 — surprise! Microsoft changed the files yesterday. No indication of what happened or why, but plenty of ...

Learn how to back up and restore Boot Configuration Data Store in Windows 11/10 using CMD or freeware. If BCD is missing or corrupted, Windows won't be able to start.

Learn how to repair or rebuild BCD or Boot Configuration Data file in Windows 11/10 using the bootrec.exe tool. This will help fix PC boot problems.

I tried a Win7 repair installation, but the installer can't seem to detect that there's an OS already on the system, even though enough of Win7 is evidently left to start (then fail) the boot process.