RAM modules can also cause unexpected shutdowns. We were experiencing increasingly frequent lock-ups, then shutdowns on one of our edit PC’s. I eventually got around to running MemTest, and saw that one of our DIMM’s was showing lots of errors. Now, with 24 GB of RAM, it took MemTest a few days to do a thorough test, but the errors started showing early in the test phase. Replaced all DIMM’s just to be sure. Haven’t had a shutdown since.
Steve Brame
creative illusions Productions