Introduction
Before resetting the SMC, try these steps:
- Turn off the Mac.
- Press and hold the power button for 10 seconds, then release it.
- Wait a few seconds, then press the power button to turn on the Mac.
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Shut down your Mac.
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On your built-in keyboard, press and hold all of the following keys: Control on the left side of your keyboard, Option (Alt) on the left side of your keyboard, and Shift on the right side of your keyboard. Your Mac might turn on.
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Keep holding all three keys for 7 seconds, then press and hold the power button as well. If your Mac is on, it will turn off as you hold the keys.
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Keep holding all four keys for another 7 seconds, then release them.
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Wait a few seconds, then press the power button to turn on your Mac.
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