How to reset the SMC, PRAM and NVRAM on a MacBook Pro Touch Bar 2018

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PRAM/NVRAM Reset

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.
You can release the keys after the Apple logo appears and disappears for the second time, or after 20 seconds. Whichever comes first.

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