I just upgraded my system with a new corsair 1200w psu and 3 r9 290s. Except I can't get any display out of the card. No beeps everything is plugged up correctly but there's no video output. I put my old gpu back into the motherboard and ran it with the new psu and surprise surprise, it doesn't work either. So I'm lost guys I could really use some help. It's gotta be something with the bios or board..