Computer Shuts Down Instantly at Random

[g4b3]

Hey guys,
Today while using Sculptris (3d sculpting program, farily CPU intensive) my computer instantly shut off. I tried to restart it and 30 seconds later it shut off again. Overheating? Is there some way I can find out for sure? It's been running fine, I did have to replace my CPU heatsink about 4 weeks ago, but it's been running fine since then. Ideas?

 

[IH8U]

Suggest running Prime95 to get an accurate read on the Temp, and weather it is an overheat. What are your temps in the BIOS?

 

[Onus]

Shutoffs, as opposed to reboots or BSODs, are often indicative of power problems. What brand and model (not just wattage) is your PSU?

 

[g4b3]

It's an Antec Earthwatts 650 watt psu.

 

[g4b3]

I think it was one my last two ram slots. When from 6 to 4 gb and it seems to be working fine. Damn . . . I hate downgrades

 

[marbski]

check the compatibility of the ram.....