Long story short, I ordered an ATI 5670 from newegg back in April. My first card didn't work. Whenever I had the card in my PCI-E slot, and turned on the computer, I'd just hear the fan going loudly and there would be a black screen, it wouldn't boot. I finally got around to shipping it back for a replacement and got the replacement in the mail about an hour ago. I put it in and had the same problem as before. I know the PCI-E slot works, I'm running an old Geforce 7600 which at least plays sc2. The 5670 only draws 64w at load and my power supply was good enough to boot with a geforce 9800. I don't have another pc to test the 5670 in.
What should I do? Is it likely they sent me two dead cards in a row or is there some compatibility problem? Could there be some conflict since my integrated graphics are also ATI? I've only ever had Nvidia cards in there so far.