Try a reset though it is possible the adapter is having trouble. Disconnect the battery and the adapter. Then hold down the power button for 30 seconds. Now reconnect everything and try again.
My 2 in 1 suddenly stopped working this morning - it will not turn on when the power button is pressed and makes no noises, no lights turn on, and there is no other suggestion of powering on. When plugged in, the green light on the adapter turns on, but the light on the laptop itself that indicates when the computer is charging/on/etc does not light up. There is no obvious visible damage to the adapter's plug or the laptop's charging port. I tried unplugging and holding the power button down for 1 minute but this made no change in the issue. Thank you in advance for any help you can provide.
Dell Inspiron 14 5000 (2 in 1) won't turn on