Re: GTX 260 freeze + crazy colours
Download MSI afterburner and set the fan speeds yourself then try playing games for a while and see if it locks up. The screen on the left looks like a memory error on the GPU itself but this may be cause by overheating if your GPU's fan only sits at 40%. I have a GTX 570 and my fan sits at 70% fan / 70 Degrees when im playing games but my card does run very hot.
CPU - I7 2600K 4.5 GHZ
RAM - 8 GB DDR3 1600mhz
GPU - GTX 570 Classified