Launch Apple Diagnostics during the system startup by holding the D key as outlined by the Apple support guide for Macs with Intel processors.


The system does not launch Apple Diagnostics and continues to the normal login window.


Potential solutions

Attempted to press and hold different combinations of D

  • command + D
  • shift + D

1 Answer 1


Remove the firmware password and repeat your test.

  • 1
    Apple Diagnostics works as expected after disabling the Firmware password. Much appreciated! Aug 13 at 19:25
  • 1
    Wonderful @AdamHurwitz some people don’t realize diagnostics is another OS different from the one they lock with a firmware password. This will surely help others that face this down the road.
    – bmike
    Aug 14 at 13:29
  • After your solution I noticed the Apple support article mentions disabling the firmware password under "Learn more" at the bottom. Disabling the firmware password is also required for resetting NVRAM. Aug 15 at 15:04

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