3 Quick Fixes for a MacBook Air That Won’t Wake Up

Close the lid for 10 seconds A power management hiccup often causes the wake failure. Closing the lid and reopening it kick-starts the wake sequence about half the time.

Force a shutdown If closing the lid doesn’t work, hold the power button for 10 seconds to force a shutdown, then boot normally.

Reset the SMC On Intel MacBook Airs, press shift+control+option+power for a few seconds. On M-series models, a simple restart is sufficient.