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Help Desk: PRAM/NVRAM Reset

How to reset NVRAM

Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds, during which your Mac might appear to restart.

*On Mac computers that play a startup sound, you can release the keys after the second startup sound.

**On Mac computers that have the Apple T2 Security Chip, you can release the keys after the Apple logo appears and disappears for the second time.


 

 

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