I've a new ASUS P4C800 Deluxe Motherboard and am using a Gainward Geforce4 Ti4600 Ultra graphic card. However, the graphic card ain't working as it should. Whenever used in 3D it freezes the computer. In windows interface there's no problem. Worth to mention is that I've never had any problem with the card before my upgrade. Neither does it matter which drivers I'm using for the graphic card. And I have all the newest updates for the MB. Suggestions?