I have recently formatted my computer (gone from vista back to xp)and have found that the fan on the processor runs constantly very fast and inevitably noisy. Before i formatted it used to spin for a couple of seconds on startup then turn itself down so you could hardly hear it,now its getting unbearable, it is running at 4560 rpm with the cpu temp at 34° I also updated the bios as i was having LAN problems and was lead to believe an update would fix it ,it didnt! I have been into bios looking for something that sets it to automatic but nothing stands out. I have tried speedfan but it doesnt work as my motherboard is not supported. The pc is a philips mt3700 with intel core 2 running xp mce with phoenix award bios. any ideas on how to turn it down?