Problem with R9 270x Help request.

Set up:
Case: Cooler Master HAF 932
Motherboard: ASUSTeK COMPUTER INC. SABERTOOTH Z77 (LGA1155)
CPU: Intel Core i7 3770K @ 3.50GHz
CPU Cooler: Cooler Master Hyper 212 EVO
RAM: Corsair Vengeance 32.0GB Dual-Channel DDR3 @ 686MHz
Main Drive: 238GB OCZ-VE...