I have an Asus A7V333-X motherboard with an AMD2600 processor. OS is XP Pro. It is about 4 years old and has started intermittantly shutting down and then restarting. The logs do not show anything strange. The power supply was changed, the processor was changed and the processor fan was cleaned. The processor is now running at 55 degrees C where it was running at 65 degrees C. The Hard drive passed the Maxtor tests and the OS was reinstalled. My next guess is to replace the motherboard. Does anyone know of any logs that can be created to monitor this better than the event viewer logs?