Got this on a Vista Ultimate machine this AM with keyboard locked.
Best I could do with an hour or so of research was to completely re-install the OS.
Glad my files were backed up on Carbonite!!!!!
I'd be interested to hear if anyone has a better solution - I did not find better answer on web research.
The BOOTMGR error occurred after I attempted compress, of course.
How To Buy The Best CPU In 2017
23 hours ago