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2013 macbook pro gets error message restarting after update

I just installed an update on my 2013 MacBook Pro. When I restarted and entered in my password, the computer just gave me a white screen with a symbol: a circle with a line through it (error). Any ideas? Thx for your help!

Posted on Dec 16, 2017 3:19 PM

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Posted on Dec 16, 2017 5:35 PM

the "prohibitory sign" appears when a major component of MacOS is found to be missing or damaged while starting up. You will need to re-Install MacOS.

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2013 macbook pro gets error message restarting after update

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