OS Windows 7 Home Premium (64 Bit) CPU Intel 2600k Motherboard P8Z68-V PRO Memory 8GB Kingston Hyper-X (At #XMP 2 - 1866MHz for CPU stability) Graphics Card HD 6990 Sound Card n/a
PSU 1200W Everest Pro Case Cooler Master Cosmos 1000 Cooling Ultra Kaze case fans and ALC 240 CPU cooler Hard Drives 600GB Velociraptor
Not sure what the exact problem was, but ran memtest and straight away it reported an error. I recently disabled something in the BIOS to stop the message below appearing. Now reset it to what it was before, and memtest is not reporting any errors.
OS Windows 7 Home Premium (64 Bit) CPU Intel 2600k Motherboard P8Z68-V PRO Memory 8GB Kingston Hyper-X (At #XMP 2 - 1866MHz for CPU stability) Graphics Card HD 6990 Sound Card n/a
PSU 1200W Everest Pro Case Cooler Master Cosmos 1000 Cooling Ultra Kaze case fans and ALC 240 CPU cooler Hard Drives 600GB Velociraptor