So, my girlfriend calls me the other day and says that the PC was freezing up on her, and since I hadn't cleaned the interior in quite some time, she decided she was going to do it. She opened it up and then blew it out with her own breath, instead of using canned air. Now when it restarts, Windows fails to boot. It gets to the Windows XP splash screen then automatically restarts. When it restarts, it goes to the safe mode menu. I have tried all the options, including the last known good configuration, but it does not boot. It gets to splash screen then restarts again. When I try to start normally, a BSOD appears for a split second before restarting. After repeated attempts, I was able to read the message on the BSOD. Apparently, the error is "unmountable boot failure". Anyone have any idea what is going on and how to fix, work around? I don't mind having to reformat, but I would like to save some of the files on the partition. Luckily, I have another PC in order to get online and find a solution!