Thanks monu for advice.
I already reinstalled the card into the motherboard about 10 times, with and without the other card and no luck. Tried it in every slot too. Tried both sets of power cables and no luck either. I don't have them connected via SLI because I'm running a 3 monitor set up but I did test it with the SLI cable and it still didn't work. I'm pretty convinced this card is dead :-(