i have that same mainboard but basically the same specs, cept that my video card is a Nvidia Geforce 6800 GT OC. while im playing a game it would crash and when it restart but the screen wouldnt show up... eventually after some trouble shooting i realised the video card itself was defective... it had a loose heatsink which was barely noticable and was overheating... so i sent the card back and they sent me a brand spanking new one and its been working fine ever since.