rgh,
Hold off returning the card, if your problem is like mine, you may need it...again this is a client machine and it is sooo bizarre it had me spooked. I didn't actually know what was wrong until I went to install video card and psu on new build customer ordered to replace dead Gateway, and found both a 550 watt new Antec psu and Evga 6800 Gt were dead. All I knew was mobo had to be dead as I replaced every single hardware device in it a few times over...it had me really puzzled when I picked it up. Now I realize the video card smoked the whole system as all that survived were the cpu and dvd-rw. That's where being there when it all happened would have saved me a lot of time.