Apple SMC Reset

 

Macbooks with non-removable batteries

  1. Turn your Mac off.
  2. Remove the power adapter from your Mac.
  3. Press and hold the Shift-Control-Option keys on the left side of the keyboard and then press the power button. Continue holding these keys for 20 seconds.
  4. Release all keys.
  5. Connect the power adapter to your Mac.
  6. Turn your Mac on.

macbooks with removable batteries

  1. Turn your Mac off.
  2. Remove the power adapter from your Mac.
  3. Uninstall the battery.
  4. Press the power button and hold for 10 seconds.
  5. Reinstall the battery
  6. Connect the power adapter to your Mac.
  7. Turn your Mac on.

imacs

  1. Turn your Mac off.
  2. Unplug the AC Power Cable.
  3. Wait 15 seconds.
  4. Plug the AC Power Cable in.
  5. Wait 5 seconds,
  6. Turn your Mac on.