I recently purchased a Dell XPS 630 and the computer displays a reddish hue sometimes. It will work perfectly, then minutes later have the color issue. I called tech support and they told me to re-seat the video card. That worked for about a day and then the problem cropped up again. I tried different monitors and different DVI cables and the problem persists... I just want to know if it could be the motherboard, or the video card that would do this? I have built numerous computers and haven't had these issues before, so I don't know what to think. Any help would be appreciated. 