For MacBook Pro with non-removable battery:
1. Shut down your MacBook Pro
2. Hold down the Control + Shift + Option + Power button for 10 seconds
3. Release the keys and turn on your MacBook Pro
For MacBook Pro with removable battery:
1. Shut down your MacBook Pro
2. Remove the battery
Hold down the Power button for 5 seconds
3. Replace the battery and turn on your MacBook Pro
For iMac, Mac Mini, and Mac Pro:
1. Shut down your Mac
2. Unplug the power cord
3. Wait 15 seconds
4. Plug the power cord back in
5. Turn on your Mac