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 […]

How to reset the SMC on Mac desktop computers -Choose Apple menu > Shut Down. -After your Mac shuts down, unplug the power cord. -Wait 15 seconds. -Plug the power cord back in. -Wait 5 seconds, then press the power […]