All of a sudden blinking vertical and horizontal colored lines appeared on my Mac Pro. Nothing seems to work to get them to disappear

All of the sudden, vertical and Horizontal blinking colored lines appeared on My Mac Pro. Tried to get rid of them . Nothing seem to work?

Posted on Jan 1, 2022 8:40 AM

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Posted on Jan 1, 2022 9:50 AM

If this persists after a restart, you likely have a Hardware issue.


As an experiment and a test for a work-around, you could use an adapter to connect to your TV set or external display.


Otherwise, you should arrange for service.

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All of a sudden blinking vertical and horizontal colored lines appeared on my Mac Pro. Nothing seems to work to get them to disappear

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