I have a SB61G2 V3, and I just bought a BFGTech NV 6600GT OC. I installed the card and tried to boot up, but my card's fan won't turn on. There is no VGA output on the screen either. The mobo and the DVDrom both have power, but I don't think the card does. I run a 3.0 GHz P3, 1 GB DDR400 RAM, DVDrom, 2x 80GB HDs, NV ti4200.