An older Radeon 5670 works fine. Card tested in another PC, also works. Tested 2x 6850, can't get 'em going. Any recommendations or knowledge of where my failure is occurring? Will not detect card in device manager.
im having the same problem man, my psu and gpu are the same. I just ordered a 750w psu so hopefully that will fix my problem, I'll post here if it does. I have found little help on this matter, yet a lot of people having same problem.