Hi, I booted into the bios and left it for a couple of hours. Temp seemed to hover around 78 CPU and 44 for the motherboard. It didn't turn off at all.
I rebooted into windows and after about 5 minutes "Click" off it went.
I am running Everest (trial edition) and it has the CPU at 90 degrees. Is this to hot ?
Any other thoughts or idears
Start the computer in the BIOS and watch to see what the temp of the cpu goes to. If it gets into the 90 degree range, look for a bad fan or slow fan speed. It may take a adjustable fan to fix, or a adjustment in the bios on the fan speed. It also may be a chipset on the motherboard may be overheating. Check for loose heatsinks( they should not move at all when turned by hand slightly).