PSU wattage?
Overclocking or even under clocking?
Tried other Software such as EVGA's Presission?
http://www.evga.com/precision/
My Rig Title : The in Home Satellite
MOBO: ASUS Maximus IV Extreme-Z
CPU: Intel Core i5-3570k @ 4.4GHz 1.1V
Ram: 4x4GB Corsair Vengeance kit @ 1600MHz 7-8-8-24
OS Hard Drive: 2x240GB Corsair GS SATA.III @ RAID0
Graphics Card: ASUS GTX770/DCII/OC/2GD5
PSU: Cooler Master 1000watt Semi Modular
OS: Windows 7 64bit Professional