All right, this is the deal - for the past couple of months my PC started showing signs of overheating (the fan on the GPU would go apeshit if I play some DX11 game... or any game for that matter) and would shut itself off in order to cool down. Now, upon realizing this I decided to do something about it and clean my GPU thoroughly. Needles to say, it was choking on so much dust, it was ridiculous.
Everything was fine after the clean up for several days, though the problems returned shortly after. No matter what type of game I play (recently tried Crysis 2, Crysis 3 and Brutal Legend \../) it will be fine for about 10 minutes until a crash occurs... and this is the main problem - there's no crash dump file, no BSOD screen... NOTHING. It is as if I reset the computer from the power button. Happens every god damn time and it is driving me crazy. I cannot play anything and I don't know what to do.
Some tech-savvy friends suggested I get a new PSU (since mine is 3 years old and its been through a LOT) though I cannot really confirm if that's the reason since I don't have a back up PSU to swap.
Any feedback on the matter will be more than welcome.
MB: Sapphire GX890
GPU: Radeon 5770
CPU: AMD Phenom II X4
RAM: 2 x 2 GB 1333 Mhz