I've had my Pavilion Elite e9180f for 3 months now. For the entire time, it has been one of the quietest computers I have ever owned. This morning, when I turned it on, the loud fan (that usually comes on for 2-3 sec, then slows) came on and stayed on. Any ideas what I can do to stop this. If it is on for a reason, then to fix that reason? Nothing has been changed, no new ...