I've had my computer going on 3 years now, and over the summer i decided to upgrade my geForce 6600 to a new 8800gts. Once i bought, and attempted to install the gts, my motherboard ended up getting fried and i had to replace it completely. I assumed that the power source was not powerful enough to handle the gts (450 watts), and expected that to somehow be the root of the problem. I recieved my new motherboard yesterday, and installed it today with all-new ram, PSU (600 watt Ultra brand name), and my 8800. I was playing diablo 2 (great oldschool game) about 15 minutes ago and everything just shut off and wont turn back on. I thought it might be the psu, but i tested it and its fine, leading me to conclude its the mobo again. The new mobo was an eVGA 650i, the old one was probably ASUS or something, i can't remember. Anyways, the only common factor between these two fries is the 8800. I dont know why this is happening but i think it might be related to that. Perhaps i got a defective one, and if i did what should i do about it?