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Question: MacBook pro grey screen loop

Hi,

I updated my MacBook Pro 8,2 today to High Sierra.


It updated successfully then about an hour after the laptop crashed. Upon restarting it displayed the apple logo then a grey screen the reboots and loops doing the same.


So far i've tried:


PRAM reset. cmd+alt+p+r (three times)

SMU reset. shift+ctrl+alt

Hard Drive First Aid in my other mac.


Verbose boot completes then back to grey screen and loop.

single user mode boots then run (fsck -fa) shows as hard drive OK.


Also does the same when booting into recovery(cmd+r) and internet recovery(cmd+alt+r) also same from usb installer.


I'm at a complete loss. Could anyone help please??


Thanks, Jordan

MacBook Pro, macOS High Sierra (10.13.1)

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FYI I seem to have solved this by removing the bottom of the case (10 Screws) and disconnecting the battery and power for a couple of hours.


Then it booted up no problem. Hope this can help someone.


Thanks, Jordan.

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Nov 17, 2017 7:53 AM in response to JordNewton In response to JordNewton

FYI I seem to have solved this by removing the bottom of the case (10 Screws) and disconnecting the battery and power for a couple of hours.


Then it booted up no problem. Hope this can help someone.


Thanks, Jordan.

Nov 17, 2017 7:53 AM

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Question: MacBook pro grey screen loop