I've newly installed the game on my PC and the installation was fine as was the patch update but as soon as the game loads my system goes into a memory dump and the whole system has to start up again. I did this a couple of times with it repeating this process. Any suggestions as to the cause?

System details:

CPU: AMD Phenom(TM) II X6 1055T Six-Core CPU
FAN: XtremeGear HDT 120 Xtreme CPU Cooler (5 Heatpipes Direct Core Contact, with rubber rings detachable 120m Neon Fan)
HDD: Single Hard Drive (1TB Samsung Spinpoint F3 SATA-II 3.0Gb/s 16M Cache 7200RPM Hard Drive)
KEYBOARD: Razer Lycosa(TM) Gaming Keyboard [+35]
MOUSE: Sharkoon FireGlider Laser Mouse [+21]
MOTHERBOARD: GigaByte GA-770T-USB3 AMD 770 Chipset Support DDR3 Ultra Durable(TM)3 Socket AM3 ATX Mainboard w/ 7.1 HD Audio, GbLAN, USB3.0, SATA-II, RAID, 1 Gen2 PCIe, 4 PCIe X1, &2 PCI
MEMORY: 4GB (2x2GB) PC10666 DDR3/1333mhz Dual Channel Memory (Corsair Value Select or Major Brand)
NETWORK: Killer Xeno Pro Gigabit High Speed Online Gaming PCI-E Network Interface Card
OS: Microsoft(R) Windows(R) 7 Home Premium (64-bit Edition)
POWERSUPPLY: 850 Watts Power Supplies (CyberpowerPC 850watt Gaming Power Supply SLI/Crossfire ready)
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
VIDEO: ATI Radeon HD 5770 PCI-E 16X 1GB DDR5 Video Card