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Helpful answers
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Feb 9, 2015 3:45 AM in response to rprhendriksby Mike Sombrio,★HelpfulTry 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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Feb 9, 2015 4:18 AM in response to Mike Sombrioby rprhendriks,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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Feb 9, 2015 7:15 AM in response to rprhendriksby Mike Sombrio,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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Feb 10, 2015 2:43 AM in response to Mike Sombrioby rprhendriks,★HelpfulIT's at the service centre now, probably a broken video board. Thanks for helping me out.
Rob