Hard to be a God freezes

[Pretend]

I don't experience problems with other games, but Hard to be a God freezes my computer after 30 seconds or up to an hour of gaming. There seems to be no consistency what causes it. Game just freezes and sometimes the audio/music just loops in the background. No keyboard shortcuts work so I have to hardware reset the computer. Seems totally random.

I have tried upgrading and downgrading nvidia drivers, I have reinstalled directx, I have upgraded my soundcard drivers, I have tried different settings in nvidia control panel. I have tried the game with different ingame video settings, I have tried two different executables to run the game (desperate). Generally all drivers on my computer should be up-to-date.

Hardware:
MSI P6N SLI V2 motherboard
Intel Core 2 E6850 processor
nVidia 7900 GTX gpu
2Gb of RAM
M-Audio 1010LT soundcard
Razer, Western Digital, Antec..