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Q: 27" 2011 iMac screen is blacking out on its own, it is not going to sleep

I have 27" iMac with 8gb of Ram. The screen is randomly blacking out on its own. The computer is not going to sleep nor is the display. This has been going on for a months. I have taken it to the Apple Store several times...They seem to fix it temporarily but a in a couple days it is back at it. They have rest PRAM, replaced the hard drive , replaced a couple cables and wiped the computer back to OS three times. I am trying to find a answer.

iMac (27-inch Mid 2011), OS X Yosemite (10.10.1), 8gb of RAM

Posted on Jan 26, 2015 11:18 AM

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Q: 27" 2011 iMac screen is blacking out on its own, it is not going to sleep

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