Took a while to figure out why the screen stays black during boot, but I eventually found that the boot menu and apple logo are by default going to an external monitor. I have tried to fix this by resetting the default display in system preferences, SMC and PRAM resets, but to no avail. I'm at a loss as to what is causing this to happen, and can't seem to figure it out. Any help would be appreciated!

2 Answers 2


Dragging the status bar (in Display Settings) to the screen you want as default worked for me! :)

enter image description here

  • I've done this multiple times, did not resolve the issue.
    – TGYK
    Aug 25, 2015 at 19:37
  • When your Macbook lid is open, does your Macbook monitor also work or only the external monitor?
    – emotality
    Aug 25, 2015 at 19:41
  • When booted, the internal display works fine, it's during the boot that the image only shows on external monitor. Cannot get into boot menu either.
    – TGYK
    Aug 25, 2015 at 19:58

Found issue to be in the display assembly. I assume something on the control board got shorted or is not functioning properly, causing EFI to not recognize the screen at boot.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .