Apple MacBook Air SMC 64 BIT

If you're experiencing weird glitches with your Mac, this troubleshooting step may help. Step-by-step guide to PRAM & SMC reset on your Mac. Learn why you may Resetting SMC on MacBook, MacBook Pro, and MacBook Air. Resetting a Mac SMC is particularly effective if you're having the Reset SMC of a MacBook Air, MacBook Pro Retina, or MacBook Pro's with.

Press and hold Shift, Control, and Option on the left side of the keyboard. Now press and hold the Power button or Touch ID button as well.

Hold all the keys down for 10 seconds. Release all the keys and turn on your MacBook. Press and hold the power button for five seconds.

Reconnect the battery and turn on your MacBook. Shut down your machine.

Yes, all the way down, not sleep or logging out. Press the power button and then press command-option-p-r.

Hold those keys down until your Mac reboots again and you here the startup chime. Let go of the keys and let your Mac reboot normally.

Your computer's fans run at high speed, even though it isn't under heavy usage and is properly ventilated. The keyboard backlight behaves incorrectly.

How, When, & Why to reset the PRAM & SMC on your Mac

Battery indicator lights, if present, behave incorrectly on Mac notebooks with a non-removable battery. The display backlight doesn't respond correctly to ambient light changes.

Your Mac doesn't respond when you press the power button. Your Mac notebook doesn't respond properly when you close or open the lid. No big deal, but if you have made many changes to your hardware behavior you will want to adjust stuff like Apple MacBook Air SMC behavior again.

The boot time after resetting a machines SMC can be a bit longer than usual, that is normal. On any desktop Mac, here is how you reset the System Management Controller: