Mac Pro freezes with loud fan?
My Mac Pro has begun freezing at random times while at the same time the fan kicks into extremely loud high speed. Can restart by holding down start button, but restart does not always succeed without the same problem. Other times, restart goes fine, then I work, sometimes for lengthy time, before the freezing problem with lohigh speed fan.
Mac Pro (Early 2008), Mac OS X (10.7.5)