First post here, but I've found many answers on this site. Sorry in advance for any vague information, I'm dealing with my neighbor's PC that I'm not too familiar with.
He asked me to come over to deal with a virus/malware issue. It was the Security Suite malware, the one that scares you into thinking you have a virus and blocks a lot of things on your PC. I copied MBAM on a flash drive and installed it on his PC in safe mode, and removed everything. I also installed a copy of Avira anti-virus free software, and updated it to the latest version. In addition, there were a few items in his startup tab in msconfig that looked like nasties, so I disabled them as well.
After all that, the computer needed to restart, so I did that and it kept restarting itself. It flashes a blue screen error for literally a split second, then restarts. I'm not sure what to do at this point, as I can't boot into safe mode, last known good config, command prompt, anything. They all just result in a BSOD.
On top of that, I don't think he has an XP CD. He's got a Gateway desktop, and he has two recovery CDs that came with the computer. Both ask me if I want to do a full recovery/reinstall of Windows (destructive) or a repair reinstall after copying stuff to a backup directory. I haven't tried either yet. Is there anything I can do before trying to reinstall Windows?