want to run apple hardware test (or similar diagnostics test) with a broken screen

Discussion in 'Mac Pro' started by ghostmetropolis, May 1, 2013.

  1. ghostmetropolis macrumors newbie

    May 1, 2013

    I've got a Macbook Pro (model no. A1175) that took a pretty bad fall and now has a broken LCD screen. Apart from the damaged screen, however, the computer is still very functional as I've been able to use it with an external monitor and have not detected any internal hardware problems so far.

    I'd like to run the Apple Hardware Test (or any similar diagnostics test) so that I can have a better idea as to what the full extent of the damages are. Unfortunately, it seems the Macbook can only detect an external monitor throught the dvi port once the OS is running and, if I understand correctly, the Apple Hardware Test runs outside of (or before) the OS.

    Does anyone know of a way that I can run the Apple Hardware Test (or similar) on a Macbook Pro with an external monitor?
  2. monkeybagel macrumors 65816

    Jul 24, 2011
    United States
    This is the Mac Pro (tower) subforum so you would probably get better responses in the MacBook Pro forum.

    If it has a DVI port, it sounds like an older model, so I am unsure. If you lid with an external keyboard and mouse connected I assume it will sleep but a press of a key on the keyboard should wake it. Once that happens, it is (a least in the later models) in what's called clamshell mode. If you restart it with the lid closed, can you see the boot screens then on the external monitor?
  3. ghostmetropolis thread starter macrumors newbie

    May 1, 2013
    Thanks, monkeybagel!

    Your suggestion worked, and I am currently running the Apple Hardware Test on my Macbook while connected to an external monitor!

    Having an external mouse and keyboard hooked up to the Macbook made all the difference, as it allowed me to stay in clamshell mode while restarting.

    Thanks again for your help! :)

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