This morning this computer shut down on it's own, and then restarted normally. The mobo is an Asus P8H67-M EVO. Because of the shutdown, I thought to check the temperature. SpeedFan shows a CPU temp of 89C, while core temps are below 30C. I then went to BIOS and looked at the temperature there and is was normal. Supposing the CPU Tin is a bad reading, what should I do? Could that have cause the shutdown?