Thanks for all the help lately with my build guys, much appreciated. Now though I'm facing a more serious problem. My HD7970 is failing to post. Specs: 3930k Asus Rampage IV Extreme 4GB ddr3 generic ram (my corsair vengeance hasn't arrived yet) AX850 Corsair Crucial M 512GB Cosmos II H100 Asus Xonar The GPU does not give a signal to my monitor. I've had to use my aging HD4870 to access the bios. The card still shows signs of life though.. The fans run and the power LEDs respond when the 6+2 pin connectors are attached/de-attached. Troubleshooting so far: Motherboard BIOS updated to latest version. HD 7970 tried in multiple slots unsuccessfully. PCI-E red control box (RIVE feature) all on. All 6+2 pins have been tested and work correctly. HD 4870 posts and works. HD 7970 tried in old system (different PSU too) no monitor signal. The card does not show up in bios GPU post but HD 4870 does. There is a red led where 'boot device' is on the motherboard (which is directly above the VGA led) if this helps.