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Question: macbook pro 15 in bootloop

macbook pro 15 in bootloop after updating to high sierra no brightness i use command option P R now in stuck no boot need a help

MacBook Pro, macOS High Sierra (10.13.3), bootloop

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Mar 4, 2018 12:03 AM in response to mujione11 In response to mujione11

Try macOS Recovery

https://support.apple.com/en-us/HT201314


Hold down Command-R or one of the

other macOS Recovery key combinationson your keyboard immediately after pressing the power button to turn on your Mac, or immediately after your Mac begins to restart. Continue holding until you see the Apple logo or a spinning globe.


To manually start up from macOS Recovery over the Internet, hold down Option-Command-R or Shift-Option-Command-R at startup.


If you still can't start up from macOS Recovery, and you have a Mac that is able to start up completely, you might be able to

create an external Mac startup disk to start up from instead.

Mar 4, 2018 12:03 AM

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Question: macbook pro 15 in bootloop