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MacBook Air beeping 3 times, black screen

Everything was find until I clicked on Update since I got a notification. While updating, the screen went black and my MacBook Air kept beeping 3 times.


I tried doing the Option+Command+P+R, but my laptop’s still not turning on.


MacBook Air 13″, macOS 10.15

Posted on Feb 16, 2021 9:38 AM

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Question marked as Top-ranking reply

Posted on Feb 16, 2021 1:01 PM

At this point, I would suggest that you reset your Mac's SMC, as follows:


Ref: How to reset the SMC on your Mac - Apple Support

3 replies

Feb 16, 2021 12:01 PM in response to Tesserax

Three beeps, then a 5-second pause, repeating

The memory in your Mac didn't pass an integrity check. If you added or replaced memory, make sure that it's properly installed.


I was only doing an update when my screen became black and kept beeping. I did not add nor replace memory. Please let me know what I should do I do next

MacBook Air beeping 3 times, black screen

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