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Mac Pro not working. It has a box with a question mark?

My Mac Pro stopped working all of a sudden. We shut it down for the night, and the next day we got a box with a question mark in it? Any ideas?

MacBook Pro

Posted on Apr 28, 2016 11:44 AM

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Question marked as Best reply

Posted on Apr 28, 2016 4:29 PM

Hope this help.


OS X: About OS X Recovery - Apple Support

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Mac Pro not working. It has a box with a question mark?

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