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Helpful answers
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Feb 16, 2015 11:23 PM in response to Martin Duekildeby Topher Kessler,Try resetting your Mac's system management controller to see if that helps: http://support.apple.com/en-us/HT201295
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Feb 17, 2015 4:33 AM in response to Martin Duekildeby Barney-15E,The power button function has changed a little from previous versions of the OS