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Helpful answers
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Jun 13, 2015 9:14 AM in response to woodybearby stevejobsfan0123,If you think it isn't working properly, please describe the symptoms.
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Jul 6, 2015 6:09 AM in response to Linc Davisby TJT263,To start Apple Diagnostics:
- Turn off your computer if it is on by choosing Shut Down from the Apple () menu.
- Press the power button to turn on your computer.
- Immediately press and hold the D key until Apple Diagnostics begins.
Straight from Apples official documentation. Why won't it work?
MacBook Pro (Retina, 15-inch, Late 2013) 2.6 GHz Intel Core i7 8 GB 1600 MHz DDR3
OS 10.10.4 (14E46) Yosemite.