Hi there! Saw your post about the eVGA 7900GT and artifacts on the screen. FWIW: I had an eVGA 7900GT that did the same thing. There is a BIOS hack and/or update for the card that addresses your problem. It can't hurt to give eVGA support an email or call about it. I think if you search the web for "eVGA 7900GT corrupt" or some similar type of combination then you might find a solution.