Need help with a 7800 GT

Hello,

I recently purchased a new computer and a BFG 7800 GT. I am having issues when I try to play any movies on windows media player. The screen will either become distorted, ie shrink to half size or go black. I then have to reboot my PC. I also get a lot of artifacts and odd colors when I play Splinter Cell.

I removed the card and tried videos with the on board graphics and they were fine, same with Splinter Cell. So it has to be something with the card.

I have an antec 450W psu, which exceeds the 400 watt min. I can play videos using quick time with out any issues. I can also play other games like BF2, EQ2, the beta for DDO without any issues.

Has anyone else had these problems? Any advice on how to fix it?

I tried calling BFG tech support but I have been on hold for over two hours and listening to the damn hold music on speaker phone is driving me crazy. Since BFG support is useless I am hoping you guys can help me out.

Thanks!!