I usually dont post on forums like these but with this im stumped. It all started when i was playing Team Fortress Classic (Half Life) and my computer completely froze up. I gotta hit the Tower button to restart it and then i tried again same thing happened. It does it at random times it could take 10 minutes, sometimes it could take 15 ect. At first i thought it was a virus so i ran a virus scan and it wouldnt even do that, it would freeze on the virus scan, after a while of doing it , it finially worked and i had no virus. So then i didnt feel like messing with it so i just reformated. After the reformat i went to go play, and noticed i still freeze. Then i opened up the case, to take a look, and noticed my ATI 9000 128Mb Fan wasnt working. I figured that was the problem so i just got lazy and ordered a 9600XT off the net. It was gonna take a few days to come in, so i just ran a huge window fan on my computer, opened up the case, and it kinda worked. It would freeze every 30 mins or so instead of 10. Then yesterday the video card came in, i hooked it up newest drivers ect. Went to play, and i freeze. Im at a loss here and cant think of anything. I checked the RAM with a ram test and the ram is fine. What do i do