Random powering up, then off on unplugging to start the cycle over
Hi - my Daughter’s Macbook Air is acting strangely. It only powers up when plugged in, and then intermittently. I will have it plugged in (tried various chargers), and it stays off even with the various online reset keystroke options. Then it will boot up and show charging. But, even hours later, if you unplug it it immediately goes black. Then it starts the cycle again, no boot up while plugged in, until maybe at some point it just does. Thanks for any input.