MacBook Air 2020, unresponsive if monitor is closed and reopened. MacBook Air 2020, charger not recognized after monitor is closed and reopened.
SMC Reset: Plug in charger. Press right shift, left control, left option keys for 7 sec, then press power key. Hold all four keys for 7 more seconds. Machine -may- restart on its own after a period of time.
PRAM Reset: Hold option, command, P, and R for 20 seconds until second chime or Apple logo appears and disappears a second time.
