Hi all. I just installed a Geforce FX5600 video card, and now my games and movies run horribly. I had a Geforce 3 before this, and everything was fine. But now, my games run laggy at times, and my movies look pixelated. I updated my vid card drivers and mobo drivers, but it hasn't helped. I have an AMD Athlon 2600+ processor, 512 MB DDR ram, and a K7 Triton 400 mobo (Gigabyte Technologies). Oh, and from a cold boot now, I will get one long beep, and no boot up till i reset. Can someone advise me? Oops, I'm running Windows XP with service pack 1.