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  1. 1) Boot Macbook with keys pressed: Command (plus) S
    • 1) Boot Macbook with keys pressed: Command (plus) S

    • 2) Wait for active command line

    • 3) Enter these 3 commands:

    • nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00

    • nvram boot-args="-v"

    • reboot

    • System should boot without issues.

    • Source:

    Comment revenir à la configuration initiale ?

    Yann Hopp - Responder

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Membro desde: 01/01/2016

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After nearly 2 weeks internet research, at last a working solution. Heureka! Thanx a lot!

Best regards,


Christian Gelbke - Responder

keep getting:

Process[207] crashed: opendirecteroyd. Too many corpses being created.

Process[208] crashed: opendirecteroyd. Too many corpses being created.

Process[209] crashed: opendirecteroyd. Too many corpses being created.


mrtjaet - Responder

This post worked !!!! Thank you so much. I joined IFIXit because of this post.

Ganesh Gupta - Responder

Hello, I have a similar problem with my MacBook pro Early 2011. Do you think, that I can use the same 3 commands?

Sandro - Responder

Key phrase: Boot. I can’t boot my machine. I’m stuck on the white screen of death. It sometimes is pink and other times the external monitor is green. I did all the resets on the Apple side (to PRAM, SMC, etc.), I tried to restore the OS (didn’t work) and I tried to use a different computer to create a working boot drive (USB) and can’t seem to get the command correct for Sierra or High Sierra. The USB Boot I created with Mojave on it could be seen in the Repair boot process but the machine simply shut down mid processing. So I can’t do the entry of the code because I can’t boot or find a terminal or be in verbose mode to do so. My 2011 15” Macbook Pro is running Sierra (was) and I have data on it I very much need - in addition to wanting to see my screens again.

Christne Taylor - Responder

Update: The text put me into a reboot loop in the command-line that I don’t seem to be able to get out of it, so I hard rebooted. And after a moment, it worked.

Christne Taylor - Responder

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