Vertical lines on my screen

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Level 1

4 points

I have recently updated the software on my computer and when I turned it back on today, it has vertical lines in a block in the middle of my screen.

The Mac is only 6 months old and has not ever moved from my desk. Does anyone know how to resolve this, please?

iMac 21.5″, macOS 11.4

Posted on Jul 5, 2021 6:43 AM

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Answer 1

Best reply

Level 10

141,360 points

Please restart in Safe Mode and then restart normally and test. If you still have a problem please call AppleCare ASAP.

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