Note 2: These steps will also work to reset the NVRAM (or PRAM) for all Macs. speaker volume, screen resolution, startup disk selection, time zone information, etc). Note 1: When you log back in you may need to readjust some of your system preferences (e.g. Keep these keys pressed down for at least 20 seconds!.Press the power button and then immediately press the command option p r keys.To reset the NVRAM on all Late-2016 MacBook Pro models (with and without Touch Bar) follow these steps: Resetting the NVRAM on Late-2016 MacBook Pro models Note: When you log back in you may need to readjust some of your system preferences (e.g. Let go of the keys and let your Mac reboot normally.Hold those keys down until your Mac reboots again and you here the startup chime.You have to make sure you press these keys before the gray screen appears or it won’t work. Press the power button and then press the command option p r keys.Yes, a full shut down, not just logging out. Resetting the PRAM/NVRAM on ALL MODELS EXCEPT for Late-2016 MacBook Pro models Since you don't specify what model your Mac is, I've included two different sets of instructions. Although according to his comment it didn't help Mattias, the first thing I would try is resetting the NVRAM.
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