Step 1 SMC reset Part 1

• Choose Apple menu > Shut Down.
• After your Mac shuts down, press and hold its power button for 10 seconds.
• Release the power button, then wait a few seconds.
• Press the power button again to turn on your Mac.
• If that did not solve the issue, move on to Step 2
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Step 2 SMC Reset Part 2

• 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 button again to turn on your Mac.
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Step 3 PRAM and 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.
• You must have a wired keyboard made by Apple in order for this to work.
• You can buy one from Amazon here.
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