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Sadie8677 Author

Level 1

4 points

My iMac turns off halfway through start up.

My iMac shuts down halfway through start up.

iMac 27″, macOS 10.13

Posted on Jul 17, 2020 6:27 AM

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Top-ranking reply

Level 10

82,108 points

Posted on Jul 17, 2020 7:09 AM

First try Safe Mode, as per > How to use safe mode on your Mac - Apple Support

Next try all the steps, at > If your Mac starts up to a blank screen - Apple Support

If those do not help, then the iMac has a hardware issue and needs to be serviced.

For service help, go to > Get Support

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Top-ranking reply

Level 10

82,108 points

Jul 17, 2020 7:09 AM in response to Sadie8677

First try Safe Mode, as per > How to use safe mode on your Mac - Apple Support

Next try all the steps, at > If your Mac starts up to a blank screen - Apple Support

If those do not help, then the iMac has a hardware issue and needs to be serviced.

For service help, go to > Get Support

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My iMac turns off halfway through start up.

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