Grey Screen after latest firmware EFI -update.

My macbook pro early 2011, refuses to restart after shutdown. It shows a grey screen, need to hold power button and restart multiple times to have it restarted properly. Has some one faced such issue?

MacBook Pro (15-inch Early 2011), OS X Mavericks (10.9.5)

Posted on Aug 9, 2015 9:14 AM

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Grey Screen after latest firmware EFI -update.

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