My iMac will switch itself off after a few hours of running
My iMac G5 20" will switch it self off after a few hours of running and I had to wait for a day or so to restart it again - I think it was running rather hot. I can not use the the normal way of starting it (pressing the start button) I had to take the back of rested on a pair of books and use the little button/switch near the four diagnostic LEDs. The fan which suppose to cool the processor is probably not working as well as it should- hence the overheating I can understand that, but why it will not start by pressing the start button?? Is it just a mechanical part or is there some circuitry attached to it? More importantly, can I fix it?
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