I have placed this here as im unsure of what the problem is! When i start a game my PC freezes and i have to hard reset. All drivers and Directx are up to date. I checked my BIOS and my probe software to see that my 3.3v was only at 2.8v - 3.1v, is this ok? Its stopped crashing now but the probe still picks this low voltage out as a fault. My power supply is a 550watt and is quite new. Can this be due to anything else please? Thanks in advance.