iMac Randomly Shuts Off
I have a 20 inch iMac. Believe it is the 7,1 model from mid-late 2007.
A while back in started just intermittently shutting off. Wait a few seconds and it boots back up and all is well again for some random amount of time.
It happens during all sorts of uses. Simple browsing, working in PS or making a movie, listening to music.....it really doesn't matter what I am doing it will happen whenever.
Sometimes it will do it once or twice per day, sometimes it will stay on for a couple of weeks before doing it.
I opened it up and dusted it all out thinking that maybe it's overheating.
Still does it.
All my temps are reading in the 40C range except for the ambien temperature which is around 23-24C.
I don't have a clue what the deal might be. I've worked in PS for hours on end at times and nothing happens but then at other times I will just be browsing the web and it will turn off.
Is there some sort of system report file I can read to try to figure this out?
Thanks.