» Fri Jun 03, 2011 4:40 am
I had a similar problem after installing a new gfx card (Gigabyte GTX 570). At first my pc just kept restarting itself, found out my PSU wasn't big enough to power the card, let alone an entire computer.
So I bought a ThermalTake 775W PSU but my computer still seemed to die, getting progressively shorter and shorter on the startup process.
We had to pull the computer apart and test each part individually, ending at the processor and motherboard.
We cleaned and replaced the thermal paste on the CPU and that's solved the problem.
There are a multitude of issues it could be, just my two cents. Just try some out, it shouldn't be anything serious.