Jenta

Q: Apple logo with square starting up then screen turning white, mid-2011 27 inch imac i7 core

I have a mid-2011 imac 27in, core i7(3.4GHz) with 20GB of RAM. The issue first started with flickering of the screen. Then it went to apple logo with a square around it when starting up. Then, the screen turns white. It will stop theren (sitting for about 30 seconds) and then reboot doing the same thing.  I thought it was the hard drive. I went to solid state(120). I got it up and working. But, it started it again.

-reset the PRAM

-reset the SMC

-unable to boot into recovery

-unable to boot into safeboot


I read something about applejack, but it wont let me log in to install the program.


Any ideas of what it could be if its the video adopter or screen?

iMac, OS X Yosemite (10.10.3), 12,2

Posted on Apr 14, 2015 7:39 PM

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Q: Apple logo with square starting up then screen turning white, mid-2011 27 inch imac i7 core

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