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I only see a dark screen with jumps from mouse display to keyboard display. Why won’t my computer come up?

looking for help to get my computer started I only see a dark screen with jumps from mouse display to keyboard display. Why won’t my computer come up?

iMac 21.5″, macOS 11.4

Posted on Aug 19, 2021 2:32 PM

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Question marked as Top-ranking reply

Posted on Aug 19, 2021 5:07 PM

If your Mac starts up to a blank screen


3 replies

I only see a dark screen with jumps from mouse display to keyboard display. Why won’t my computer come up?

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