charger light off

My MacAir's display was automatically mirrored to an external display when I plugged in the thunderbolt adapter cable. I went to another place and when I connected the charger having the external screen connected and duplicated, it did not turn on the green light, but when disconnecting the...

Hello, last night, out of the blue, my macbook (mac sierra) stopped charging. I was in the middle of writing sth, had not moved/disconnected/ changed anything and at a 27% the battery (needs to be serviced) stopped getting power and the light on the charger went from orange to nothing. I put the...