OK, could be the PS. Does not even get to the OS now before it cuts off. Going to take it apart now. Guess I'll regrease the thermal contact of the CPU while I'm in there.
The old PS that I took out initially was a 300watter. It was still working but I needed a fatter one to power the graphics card which required a minimum of 425. My last 500w PS lasted 3.5 years.
Oh goody. Maybe I'll get into breaking down the new PS.
Yippie for me.