already tried both the 9.1, 9.2, 10.3 and 10.4 graphics drivers... chances are one of those would be stable i'm sure. Tried completely bypassing my sound card and using most recent drivers for on board audio, currently running latest sound card and graphics drivers that i can find that are stable.
Im running 32bit windows 7 and i generally put ESET into "full block" mode whenever im gaming... im pretty paranoid about my security settings so everything has to be as secure as possible.
Im inclined to believe its the power supply - hotwired it by bypassing the pins on the ATX 24 pin and circuit tested it with a voltmeter, showing some spiking on every rail apart from the 12v rail.
PC has also started crashing randomly when im doing something intensive but i realized i had the CPU undervolted XD
Yep sounds like the power supply and you may also want to reset all your overclock settings to default, and see if that helps with the crash issue. Outside of that if you get blue screen crashes under intensive load, you may want to check your ram and make sure you don't have any bad sticks, and cross check and see if you have any defective ram slots in your motherboard. Any of those things can cause PC crashes. But as you stated your problem most likely lies with the power supply. I would suggest the corsair 1000 watt modular power supply or higher, or the equivalent in the Antec versions.