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

You can release the keys after about 20 seconds, during which your Mac might appear to restart.

Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. To reset the PRAM/NVRAM on your MacBook, please do the following: Press the power button again to turn on your Mac.Shift on the left side of your keyboard.On your built-in keyboard, press and hold all of these keys:.Keep holding all four keys for another 7 seconds, then release them.įor devices that do not have the T2 security chip: If your Mac is on, it will turn off as you hold the keys. Keep holding all three keys for 7 seconds, then press and hold the power button as well.Shift on the right side of your keyboard.Option (Alt) on the left side of your keyboard.Control on the left side of your keyboard.On your built-in keyboard, press and hold all of the following keys.If the issue persists, follow these steps to reset the SMC: Press and hold the power button for 10 seconds, then release the button.Wait a few seconds, then press the power button to turn on your Mac.įirst, check to see if your MacBook has the T2 Security Chip (see ).įor devices that have the T2 security chip:īefore resetting the SMC, try these steps:.Disconnect the cable, wait 30 seconds, then reconnect the cable.To reset the SMC (or do a reset similar to the SMC on M1 Apple devices): Once completed, skip to the PRAM/NVRAM resetįor all hardline Apple computers (iMac, Mac Mini, etc.)

Wait 30 seconds, then open the lid press the power button to turn on your Mac.Once the computer is completely shut down, close the lid of the MacBook.These Macs do not have an SMC, but there is a way to do a reset similar to the SMC reset: This is sometimes necessary to restore normal lower level system functionality to your Mac, particularly for power and hardware related troubles. Resetting your Mac System Management Controller (SMC) and/or the Mac PRAM/NVRAM can be a solution.

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