|Install Speedfan to monitor the CPU temperature and the fan RPM and see if you can spot either of them abnormal. High CPU temperature may mean poor heat sink contact or if fan RPM is low, then the fan may be going. It is also possible that the fan speed is being misread by your motherboard. If the temps are a little high, especially if the RPM is low and not adjusting higher, a new heat sink/fan may be your best bet. If the temps are very high but the fan is spinning reasonably (but that should have warned about overheating though), you may need to reseat the heat sink with new thermal compound.|
You have to be a little bit crazy to keep you from going insane.