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One way to fix an overheating graphics chip in an iMac
My iMac killed it's hard drive the first-and half year and then the entire screen/ graphics card and mobo had to be replaced at the three year mark. (luckily I had an extended warranty from Futureshop). It unfortunately began to misbehave again shortly thereafter.
One way to fix an overheating graphics chip in an iMac
I wish I had read this before buying my early 2008 iMac. It failed recently. Pretty much same symptom as described here, boot up for about 5 mins and then keep rebooting. Genius quoted me $400+ replacement of LB. I'd rather throw it away! My 7 year old P4 Dell PC desktop still works fine! If I wanted to, I would be able to boot up even my 486 machine! The iMac is the worst investment I made...
One way to fix an overheating graphics chip in an iMac
Thanks so much for the great tip! Just installed an enclosed fan in hot pocket area, instantly fixes the problem. Brought my temp from 55 deg C to about 30-32 C even while gaming in windows 7 bootcamp! I've tried everything else to no avail but this works 100% . Thanks again!
One way to fix an overheating graphics chip in an iMac
Outstanding, extremely helpful comment. I used one of these fans:
http://www.coolerguys.com/840556094289.html Slap a velcro ring around the inlet side (I put the "loop" on the fan, and the "hook" on the iMac), put a horizontal strip top & bottom on the iMac itself, and the USB power cord is just the perfect length, even on a 24" iMac. If the overheating problem has already damaged your GPU (so you still get video artifacts and kernel panics), you can disable Quartz Extreme: http://hints.macworld.com/article.php?story=20040724190553112 To test whether or not this will actually help you, try booting in safe mode. If it runs perfectly fine that way, then disabling QE will help. |
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