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Thin vertical line on iMac 2019 21.5 inch

I have a thin vertical line appear on my iMac display screen. Any ideas ?

iMac 21.5″, macOS 12.1

Posted on Jun 27, 2022 1:51 PM

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Question marked as Top-ranking reply

Posted on Jun 27, 2022 2:08 PM

Please shut it down and then reset the NVRAM, then test. Next, if that does not work please restart in Safe Mode and then restart normally. If neither works please take the computer to your local Apple Authorized Service Provider to be professionally diagnosed.


Please click for instructions:

How to reset NVRAM on your Mac

Safe Mode

1 reply
Question marked as Top-ranking reply

Jun 27, 2022 2:08 PM in response to Blagy

Please shut it down and then reset the NVRAM, then test. Next, if that does not work please restart in Safe Mode and then restart normally. If neither works please take the computer to your local Apple Authorized Service Provider to be professionally diagnosed.


Please click for instructions:

How to reset NVRAM on your Mac

Safe Mode

Thin vertical line on iMac 2019 21.5 inch

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