IMac won't boot after blue screen

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IMac won't boot after blue screen

Hi,

My iMac (mid 2011, 27") will not boot anymore. I was making a Facebook post and the screen turned blue. ( blue vertical stripes). After turning it off and on again the Apple logo appears, the progress indicator comes up and after around 20% it disappears and the screen stays grey forever.

I Disconnected all my external hardware except my startup disk, a Lacie thunderbolt SSD. I can not load diagnostics (D), and it will not go to the recovery (Cmd+r).

When I disconnect the SSD a file symbol with a question mark appears. Also loading diagnostics and recovery won't work.

Does anyone have any idea?

Rob

iMac (27-inch Mid 2011), OS X Yosemite (10.10.2), 8GB Ram

Posted on Feb 9, 2015 3:27 AM

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Answer 1

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SeaPapp

Level 7

26,486 points

Feb 9, 2015 3:45 AM in response to rprhendriks

Try the steps here Mac OS X: Gray screen appears during startup - Apple Support you may need to use internet recovery since you can't access your own recovery partition OS X: About OS X Recovery - Apple Support IF you applied the firmware update Computers that can be upgraded to use OS X Internet Recovery - Apple Support

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Answer 2

rprhendriks Author

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Feb 9, 2015 4:18 AM in response to SeaPapp

Hi Mike,

I tried all the steps. It will not do a safe boot nor will it do a recovery. Resetting the NVRAM will make the screen brighter ( default setting?). It looks like the progress bar will continue a little bit further during safe boot. When doing a shift cmd V a see a bunch of Linux command come by and then the screen again turns grey.

any other options possible?

regards,

ROb

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Answer 3

SeaPapp

Level 7

26,486 points

Feb 9, 2015 7:15 AM in response to rprhendriks

I think your best option is the last step listed;

If the issue persists after you follow the above steps, you may wish to make an appointment with a Mac Genius at an Apple store, contact AppleCare via phone, or contact an Apple Authorized Service Provider for assistance.

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Answer 4

rprhendriks Author

Level 1

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Feb 10, 2015 2:43 AM in response to SeaPapp

IT's at the service centre now, probably a broken video board. Thanks for helping me out.

Rob

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