Please try running the Diagnostics on your computer by tapping the F12 at the start up and select the option Diagnostics. Complete all the tests and revert us here if you encounter any error message. After completing all the tests, restart the computer and tap F2 to get into BIOS screen, check the AC Adapter status.
Hope this helped.
Thanks and Regards, Munawar P #iworkfordell To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your regionUS / India. For Dell support videos clickhere.