Since a while ago my GTX 580 has been crashing on and off. Some days I used to be able to work and even game without issues but on other days my 580 crashes instantly upon reaching the desktop. Unfortunately now it is a constant problem and as soon as I install any drivers my graphics drivers crash and I have to boot into safe mode to uninstall them.

I’ve tried drivers:
262.99
314.22 (I believe this is the last one that worked properly but doesn’t work anymore)
327.23
358.50 (Won’t even reach splash screen with these drivers)

I’ve tried re-installing windows 7 x64. I’ve also tried reinstalling my motherboard drivers (Gigabyte x58A-UD3R Rev. 2). I’ve tried memtest and using different combinations of my dimms (3x 4GB).

I’m looking for advice on anything I can try to do to resolve my problem.
I’m considering flashing the Bios on my 580 (looking for advice if this is a good idea or not).

Any help is much appreciated. As a 3d artist my livelihood depends on my pc working correctly.