Loopy Start

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Level 1

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Loopy Start

what is the best way to start or reboot my MacBook Pro in recovery mode? After installing OSX yesterday my computer has been looping at startup even in safe mode. I'm finding it difficult to jump in in the amount of time it allows me, before it shuts itself off and starts to reboot system all over again. I have already tried the shift key and that doesn't seem to work at all.my warranty, well my extended warranty that I bought, expired 2 months ago. Parentheses go figure! I truly hope that this does not end up as a very expensive fix. Murphy's Law being what it is, I just want to be able to fix my computer.

Is it possible to run diagnostics in MacBook Pro as a "guest"? I have run into a wall, it seems, and my profile starts runs halfway through, and restarts on its own. I will not allow me to override with "Command and R codes."What exactly do I have to work wth in SafeMode?

MacBook Pro (15-inch Mid 2012), iOS 9.0.1

Posted on Nov 6, 2015 5:57 PM

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Answer 1

Loner T

Level 9

59,536 points

Nov 7, 2015 1:58 PM in response to acemoser

1. Reference for various key combinations - Startup key combinations for Mac - Apple Support .

2. Try to reset the SMC - Resetting the System Management Controller (SMC) on your Mac - Apple Support and NVRAM Reset - How to Reset NVRAM on your Mac - Apple Support .

3. If you have a second Mac and appropriate cables/adapters, you can use Target Disk Mode as described in Share files between two computers with target disk mode - Apple Support and see if the 'bad' Mac can be accessed from a functional Mac.

4. If you Mac is the 2012, the worst-case scenario is to physically remove the internal disk and boot from an external disk after you install a working version of OS X using How to install OS X on an external drive connected to your Mac - Apple Support .

5. If all else fails, try the nearest Apple Store Genius Bar.

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