HT202731: Using Apple Diagnostics

Learn about Using Apple Diagnostics
TJT263

Q: Why wont Apple Diagnostics open?

To start Apple Diagnostics:

  1. Turn off your computer if it is on by choosing Shut Down from the Apple () menu.
  2. Press the power button to turn on your computer.
  3. 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.

MacBook Pro (Retina, 15-inch, Late 2013), OS X Yosemite (10.10.4), 2.6GHz IntelCorei7; 8GB1600MHzDDR3;

Posted on Jul 6, 2015 6:04 AM