Failed PRAM reset

Question

Failed PRAM reset

After noticing that one of the USB C ports on my 2020 MacBook Pro had stopped working, I did an SMC reset. This seemed to fix the problem temporarily but a few days later the port had stopped working again. This time, I tried resetting the PRAM. After shutting the computer off and holding the command+option+P+R keys, the screen remained black and the green camera light came on. Now I cannot turn the computer on no matter what I do. I tried re-doing the PRAM reset to no avail, and another SMC reset. If I hold the power key for more than 10 seconds, the green camera light begins slowly blinking but the computer does not turn on. Has anyone else encountered this problem, or know how to fix this?

MacBook

Posted on Feb 21, 2021 8:00 AM

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Answer 1

Feb 21, 2021 12:05 PM in response to mdhurst

Thanks, I didn't know that! I tried this but there was no change - still a black screen with the green camera light on. Could I have trigged some other command by doing the command+option+P+R sequence thinking I was reseting the PRAM?

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Answer 2

mdhurst

Level 5

6,629 points

Feb 21, 2021 12:31 PM in response to macbook_pro_help

Check the settings on your touch bar, perhaps you have the brightness turned all the way down, could have happened by a mistake and or a key sticking. Just a wild guess. My cat has managed to do something similar with the old function keys in the past.

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Answer 3

mdhurst

Level 5

6,629 points

Feb 21, 2021 8:44 AM in response to macbook_pro_help

There is no combination of buttons to reset the M1 MacBook. Turn it off, close the lid for 30 seconds then reopen it. That is the equivalent to resetting the SMC

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Failed PRAM reset

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