After waiting a few seconds, briefly press the Power button on your Macbook Air.Hold all of these keys ( Control + Option (old) + May + power button) pressed for ten more seconds then release them at the same time.While you are holding these keys, you will need to press and hold the On / Off button for a few seconds as well. The keys Control + Option (old) + May on your keyboard should be held down simultaneously for about ten seconds.To reset the SMC, here are the steps to follow: After waiting a few seconds, briefly press the Power button on your Macbook to start up.After this delay, release the power button. Now keep the On / Off button pressed for about ten seconds.Make sure your Macbook Air device is properly powered off.the checks to be carried out before resetting SMCīefore proceeding with the SMC reset, please do some manipulations: Simply resetting the system management controller (SMC) can fix any malfunctions your trackpad is experiencing. A system management controller (SMC) reset so that your device's trackpad clicks again

Right click not working on mac air