iMac starts to boot then shuts down

I hear the startup tune and see the apple and progress bar until 80% or so then just black screen

iMac 27″, macOS 10.12

Posted on May 27, 2025 9:48 AM

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den.thed

Level 10

90,400 points

Posted on May 27, 2025 10:04 AM

Follow the instructions at > If your Mac starts up to a blank screen - Apple Support

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Top-ranking reply

den.thed

Level 10

90,400 points

May 27, 2025 10:04 AM in response to Roopoo

Follow the instructions at > If your Mac starts up to a blank screen - Apple Support

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iMac starts to boot then shuts down

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