i recently bought a Radeon x1650gt from newegg. I installed it and it froze in windows startup. My previous card was a long-lasting Radeon 9550, and it worked fine. Can anybody tell me the reason? I have a nForce3 mobo, athlon +3000 (939), 1gb ddr2, 80gb hdd, 450w power supply, and a sb-live sound card.