Originally Posted by theking

...and I traced it down to overheating (I ran all of my antivirus software etc. and found nothing). I took the case off but I cannot really see into it well enough to determine if the primary fan is working. I think that I can hear some sound from the fan but I cannot see if the blades are turning as the fan is encased.

None the less I have left the case off and put an external fan behind it to cool it. It has substantially cooled down and has not locked up in the past couple of hours.

Question: can this be a permanent fix or should I take efforts to replace the fan...or can the overheating be caused by something other than the internal fan not working properly?