I have a Dell XPS 9000 with an nVidia GT 220 1gb card. I think I have a problem with the card not outputting any video. The screen just goes black and the monitor goes in to power save mode. I have connected both DVI and HDMI and the signal goes out on both. Recently, I got the game Metro 2033 - basically a mutant shooter. I started playing the game and within minutes, my screen goes black, the monitor goes in to power save mode. It's very repeatable. I called Dell and he said there might be a problem with the card and they're sending me a new one. Any other ideas out there? It's usually when processing high res video that this happens.