macOS high sierra broke my MacBook pro

I have installed high sierra pro overnight and now I just get the following screens over and over and will not boot up.

Please help

User uploaded file

Posted on Sep 26, 2017 2:52 AM

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4 replies

Oct 16, 2017 8:15 AM in response to shaneparsons

As Lexpex suggested

Start up your Mac in single-user mode or verbose mode - Apple Support

and use recovery

recovery mac


you may also try the following steps in order

Shut down

Disconnect all external devices

Mac Mini: all but video, mouse, keyboard

iMac: all but OEM mouse, keyboard

Laptop: all devices

reset the SMC, repeat two or three times

https://support.apple.com/en-us/HT201295


reset the NVRAM

How to reset NVRAM on your Mac - Apple Support


then boot into safe mode

https://support.apple.com/en-us/HT201262


then reboot normally with devices disconnected.

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macOS high sierra broke my MacBook pro

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