Firmware update causes mac book pro to not respond
Hi all. I was hoping someone could help me out please? I just ran the latest firmware update for my 2011 mac book pro and after it installed it now won't start up, only getting to the gray screen before freezing there.
I've tried all the on line solutions I can find on Apple's site, but no luck. Can anyone please tell me how I can fix this??
Thanks heaps.
See gray screen
https://support.apple.com/kb/TS2570
Hold the shift key down upon boot, this will perform checks and disable any third party kext files installed into OSX and called a Safe Boot.
(Kext files can also be installed by software itself and if you have it auto-launcing at log-in that could cause a freeze.)
Once in, copy your personal data off the machine to a external storage drive (in addition to TimeMachine if your using it) and disconnect.
Go around and update all your third party software, or remove some that don't have a update and do have kext files in the System/Library/Extensions folder (use the devleopers uninstaller preferred)
If that fails then hold c boot off the 10.6 disk (or command r boot into 10.7 recovery) and simply reinstall OS X, this will replace OS X only with a fresh copy, then software update.
If that fails, then you likely have a failed firmware install, you can install it manually
https://support.apple.com/kb/HT2213
https://support.apple.com/kb/HT1237
If that fails, you'll have to take your machine in for service and get the logicboard replaced.
If OS X boots, but you can't log in or have a problem after logging in, it's likely a third party program or user account issue, create another user account and test again when your problem occurs. If you can't log in, there is a trick to create a new admin account at the command s boot.
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