I'm pretty sure I have a bad graphics card. Monitor display froze, Blue screen of death saying NV4_Disp driver had been caught in an infinite loop, won't reboot completely without freezing, removed one of the cards, everything powers up fine.
Now I just need to know, if I want to set up two geforce cards in SLI, do they need to be the same model? If I have two 8800GTs, and one failed, does it need to be paired with another 8800? Or can I use a newer card?