This exact same thing happened to me. I installed SuperAntiSpyware, ran one scan, then restarted the computer. Upon restart I got a popup window that asked me to enter my name and password (none of the Windows XP account have passwords). I couldn't get past the window so I had to reset. Now I get a blue screen everytime I try and start Windows. Safe mode doesn't work, last good configuration doesn't work. I made a boot disk so I can access the file system via DOS, but can't do much else. I attached my log file. This is my wife's parent's computer, I work with computer's for a living and I'm pretty embarrassed that I managed to completely break theirs. Any help would be great. [attachment=0]logfile.zip[/attachment] Thanks!