I have a Dell Inspiron 5160. I recently had the motherboard replaced (a connection had broken) and now I noticed that the fan runs on high all the time (which it didn't before). It is not a big deal...just annoying. I ran the Dell diagnostic tests for the fan and cpu and everything passed. Also downloaded I8kfanGUI. It shows CPU temp at a pretty constant 73 degrees C. Anyone have any advice here? Thank you.