Specs: Windows XP 32 bit E8400 3.0GHz (Zalman 9700 heatsink) 650W Antec PSU 8800GTS 512 MB Seagate 7200.11 500GB Corsair XMS2 DDR2 1GB (x4) Computer has been crashing since yesterday afternoon. So far I've had to hard boot it about 15 times since then until now. First crash happened mid-game and the computer just restarted, no errors or anything. From then on it's been one crash after the other. When I'm playing this one game, it always seems to crash during loading. When I'm playing Counterstrike source, it always crashes when I try to quit. No matter what game I play, it will crash it within 30 minutes (usually). I even tried it with an older game (Morrowind) and it still crashed. It also did it when I was watching a video on YouTube and when I tried to exit Prime95. The crashes never give me an error, and it doesn't let me window out of the application or ctrl+alt+del. I'm able to move my mouse around for a couple minutes before that completely freezes. Then I have to hard boot it. I've checked my system, cpu, and gpu temps and they are all good. Thouroughly checked for viruses, spyware, malware, etc. and got rid of the small amount of spyware that came up. I've Updated drivers for my GPU and have also tried a memtest. Memtest came up with nothing. Had this computer for over a year with almost no problems and it was the first one I built. I'm starting to run out of ideas. I just bought a 4-pack of games from steam 2 days before this started and the initial crash happened in Dark Messiah of Might and Magic (one of the 4 games). That's the only new software or hardware I have added in a while. Any suggestions?