MacBook Pro can't run hardware test with pressing "D" key on reboot
139116
Why is Apple hardware test (AHT) not loading when pressing key D on system start?
24007
How to troubleshoot a computer not booting up when powered on?
46157
Mid 2012 MBP shuts down claiming no power with charge at 30% or 40% or more
145512
Restart Ubuntu via keyboard
22353
How do I boot from my Mac partition?
84324
With a firmware password set on a Retina MacBook Pro, what are recovery options?
155230
Mac repeatedly getting stuck at progress bar
313
Yosemite won't boot any more after attempting to enable FileVault and TRIM
48825
How to recover from a forgotten password for MacBook Pro?
31996
El Capitan froze and rebooted (Macbook Pro Retina Mid 2012)
124551
Keyboard layout isn't kept upon reboot
143913
MacBook Pro stuck in gray screen when booting
90062
How would I identify what's causing my Mac to permanently hang on shutdown?
44350
How to stress a MacBook Pro Retina?
25264
Built-In Trackpad and Keyboard Unresponsive after Sleep or Restart
15139
Blank Macbook pro with no operating system. Trying to fix
151219
How can I thoroughly test all the hardware on my computer?