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Helpful answers
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Feb 3, 2015 11:11 AM in response to jacks2000by Nymana,Pretty much have the same problem! Everything work, but always got the pixels blinking all over the screen, until the whole computer freeze (or at least the screen) and I have to reboot it. I can reboot with the button and my gear works (mouse etc) Had to buy a new mouse recently though. Don't know if it has anything to do with the comp.
The comp seems to work way better in games (Heroes of Newerth) where the pixels are all gone. The comp. also seems to be a bit slower than usual overall, thinking at random.
iMac i7 2.93Ghz 8gb DDR3 memory Running 10.10.2
I am about to buy new graphic card. Would appreciate some help before that to confirm whats wrong.
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Feb 3, 2015 12:00 PM in response to jacks2000by Old Toad,Is your iMac a mid 2011 27" with a AMD Radeon HD 6970M video card? Check to see if it meets the requirements of this Apple graphic card recall: iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program - Apple Support. If it does make an appointment at the nearest Apple Genius bar for a diagnosis. Apple fixed my iMac at no charge under the recall.
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Feb 3, 2015 12:12 PM in response to Old Toadby Nymana,Sadly no
Its a mid 2010 27" with ATI Radeon HD 5750 1024 MB
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Feb 3, 2015 1:25 PM in response to Nymanaby rkaufmann87,
I'm sorry to say but it appears your graphics card has failed. Take it to your local Apple Store or Apple Authorized Service Provider (AASP) to be professionally assessed then you can decide what to do. In the interim make sure you have a Time Machine backup and/or a bootable clone.
