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Level 1

8 points

Software Security update for MacBook pro 2012 and asked to restart then show this on screen and does not turn on!

Mac Pro

Posted on Apr 29, 2020 9:28 PM

Top-ranking reply

Level 10

245,453 points

Posted on Apr 30, 2020 2:25 PM

Hold alt key on startup & see if there's a boot choice, if not try CMD+r keys on startup.

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