Ahhhh...barebonesing it! I've had to do that before, and to my surprise, it turned out to be the PSU...I'll never buy a cheap PSU again. My computer had that sort of problem when I was using a GF4 Ti4600 and, I guess because of the power draw, pulled that psu to its bitter death. I have since replaced the card and the PSU. I have a Antec TruePower TrueBlue True480. Awsome PSU.