I have a 2.6 Core 2 Duo Mac Mini from a few years back that has worked like gang busters. All of a sudden, my fans are now stuck on high and will not cycle down. It sounds like a vacuum cleaner. I've reset the PRAM and SMC and it has not fixed the problem. I have also restarted several times. I have not tried to open it up or install any ram or anything else. I think my mac mini is long out of Apple care. What should I do? Does any one know what this problem is?