My computer has been randomly turning off by itself. It happens at different times and with different PROGRAMS running.

I've run memtest86 twice, both for 7 passes with no errors.

I'm not really sure what to do to find out what the problem is.

Any help would be much appreciated.

<<< SPECS on the leftA number of problems can cause this:

- A Fan that stops spinning.

- A High Temp condition.

- A POWER Supply Problem

- Loose/Intermittent connection

- Dirty or Intermittent Wall Power to computer that dips just long enough to cause a shutdown ( this sometimes also causes a reboot after a blue screen )

- Hardware Failure of main board Have you checked your temperatures under load?  Also, what make/model of power supply do you have?Thanks for all the replies guys.

I'm going to run prime95 and test load temps. Idle temps seem fine at the moment.

I'm running a modular Cooler Master M520One other thing. When was the LAST time you cleaned the dust from inside the case?Prime95 had been running for a minute or so, with temps no higher than 60C when the computer turned off.

Could I be running too many components off one rail? Not sure how these things work...

I have more than adequate cooling so I don't think that's an issue.

Any ideas?