MacOS Reset

NVRAM Reset

Reset NVRAM on your Mac

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

SMC Reset

Reset the SMC of your Mac

• Shut down your Mac
• Hold the left Shift+Control+Option keys down, then press and hold the power button down. Keep all four buttons pressed down for ten seconds, then let go.
• Turn on your Mac.