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Level 1

4 points

apple has red and gray vertical lines, keeps shutting

Desktop computer has leg red and grey vertical lines. Will not boot up. Screen goes black, computer restarts and the lines are back

iMac 21.5″, macOS 10.13

Posted on Apr 19, 2021 10:56 AM

Top-ranking reply

Level 10

82,540 points

Posted on Apr 19, 2021 11:11 AM

You have a hardware issue and need to contact Apple Support or your local AASP. see > https://support.apple.com/

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