Macbook Pro won't boot up

My 2012 MacBook Pro won't boot up it has the apple logo and the bar only goes to close to the end but that is it.

MacBook Pro 13″, 10.15

Posted on Aug 11, 2021 7:12 AM

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Aug 11, 2021 7:19 AM in response to hollytone22

Suggest shutdown by whatever means required and remove all external devices. Attach to charger and restart and immediately hold the Shift key until the Apple Logo appears then release. This is Safe Mode and will do a repair disk, clear cache files and only load Apple Software, extensions and fonts. The computer will load slowly - normal. If successful - good. If not - please advise.

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Aug 13, 2021 7:13 AM in response to hollytone22

On that model, assuming it is the non-Retina version, the weak link is the hard drive cable. After 3-6 years of vibration of normal use and transport, the thin insulation can chafe against sharp edges on the mettal chassis and cause intermittent interruptions. Symptoms of a worn cable can mimic those of a failing hard drive.


Most of us who are familiar with that model recommend the cable be changed whenever you change the hard drive.


The cable is inexpensive (~US$16), available, and can be installed in under 30 minutes by a complete novice.

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Macbook Pro won't boot up

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