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"About this Mac" won't open

My Mac is a 2014 model and up to date. Why can't I open it?

MacBook Pro with Retina display, OS X Yosemite (10.10.3)

Posted on Apr 21, 2015 8:52 AM

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5 replies

Apr 25, 2015 1:26 PM in response to iPhone5brazil

When starting, using Command/R. You will be taken to a screen with options for disk utilities, apple online support, time machine and reinstall. There is where you can reinstall the latest yosemite. As long as you do not use disk utilities to erase the drive, it will reinstall the operating system and not delete any personal files. I would use ethernet as this is done on line and it's faster this way. You will be asked for your apple id and password.

"About this Mac" won't open

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