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My Mac will no turn on

My Mac will not turn on keeps coming up with a warning then backs out and shuts down again help

iMac 21.5″ 4K, macOS 10.14

Posted on Dec 1, 2020 1:39 PM

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Question marked as Apple recommended

Please refer to If your Mac won't turn on or start up and if you cannot get it going after trying the steps in that guide, your next option is to take it to your local Apple Authorized Service Provider.


Posted on Dec 1, 2020 2:14 PM

2 replies

Dec 1, 2020 1:55 PM in response to Ashdorton

You've posted this in a forum, where users are helping other users. Would you be able to specify the error message you're seeing? When has this started? Does your Mac do the chime? What does "back out" mean in this context? Did you recently install any apps, updates or made any modifications to your machine (RAM upgrade, etc.)? Please include a picture of the warning, they say an image is worth a thousand words...🖼

My Mac will no turn on

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