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iMac starts up then halfway during start up my computer turns off.

What if my iMac starts up but then halfway during start-up my computer turns off? I haven't made any updates yesterday and it worked fine all day without any problem...


I plugged in my wireless keyboard to start my computer in safe mode and the same thing happens. The loading bar loads almost until the middle and then after a while, the computer shuts down...



iMac 27″ 5K, macOS 11.3

Posted on May 18, 2021 7:15 AM

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Question marked as Top-ranking reply

Posted on May 18, 2021 7:33 AM

Possibly a hardware failure. Please try the troubleshooting steps in If your Mac doesn't start up all the way and if you have no luck, please take the computer to your local Apple Authorized Service Provider to be professionally diagnosed.

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iMac starts up then halfway during start up my computer turns off.

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