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User profile for user: Clyde_slyde123
Clyde_slyde123 Author
User level: Level 1
4 points

MacBook Air Reboot Loop

My MacBook Air is currently stuck in a reboot loop. It is constantly restarting at the apple logo and progress bar. The progress bar fills up about a quarter the way through and restarts. I’ve tried all keyboard boot from recovery mode, safe mode, PRAM VRAM mode, factory reset and the MacBook just ignores it and restarts. It responds to the power button but it takes about 30 seconds to turn off. I’ve tried holding the power button to load up boot options but it restarts before it loads up. I also don’t hear anything from the MacBook, no startup sound and when I plug in for charging it doesn’t make a noise. I recently downloaded macOS Monterey and had previous crashes with Kernal. I don’t care about losing data I just need the Mac to work. I can’t go to a repair store or apple store as there are literally none near me at the moment. I have classes online and need this to be fixed as soon as possible.

Posted on Nov 6, 2021 3:43 AM

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User profile for user: HWTech
HWTech
User level: Level 9
60,362 points

Posted on Nov 6, 2021 6:03 PM

If you have a 2018+ model with the T2 security chip or an M1 Mac, then try "Reviving" or "Restoring" the T2 firmware. This procedure will require access to another Mac running macOS 10.15+. If you don't have access to the necessary Mac, then you will need to have the Apple Store or an Apple Authorized Service Provider to attempt this procedure for you. If "Reviving" or "Restoring" the firmware does not work, then most likely the Logic Board will need to be replaced.

Revive or restore an Intel-based Mac using Apple Configurator 2 - Apple Support


Revive or restore a Mac with Apple silicon using Apple Configurator 2 - Apple Support


If you have a 2017 or earlier model which uses a Magsafe charger, then most likely the Monterey upgrade corrupted the system firmware and there is nothing you can do but have the Logic Board replaced.


I'm currently working on a Mac which recently had an attempt to install Big Sur which is doing the same thing although I am for some unknown reason able to boot the laptop if I disconnect the battery (at least to an external drive). I'm still investigating the issue, but the diagnostics did report a firmware issue.


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User profile for user: HWTech
HWTech
User level: Level 9
60,362 points

Nov 6, 2021 6:03 PM in response to Clyde_slyde123

If you have a 2018+ model with the T2 security chip or an M1 Mac, then try "Reviving" or "Restoring" the T2 firmware. This procedure will require access to another Mac running macOS 10.15+. If you don't have access to the necessary Mac, then you will need to have the Apple Store or an Apple Authorized Service Provider to attempt this procedure for you. If "Reviving" or "Restoring" the firmware does not work, then most likely the Logic Board will need to be replaced.

Revive or restore an Intel-based Mac using Apple Configurator 2 - Apple Support


Revive or restore a Mac with Apple silicon using Apple Configurator 2 - Apple Support


If you have a 2017 or earlier model which uses a Magsafe charger, then most likely the Monterey upgrade corrupted the system firmware and there is nothing you can do but have the Logic Board replaced.


I'm currently working on a Mac which recently had an attempt to install Big Sur which is doing the same thing although I am for some unknown reason able to boot the laptop if I disconnect the battery (at least to an external drive). I'm still investigating the issue, but the diagnostics did report a firmware issue.


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MacBook Air Reboot Loop

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