Hi ezeeyahoo,
May I know the exact issue with the adapter?
Does the computer boot into windows?
Does the Dell adapter charge the battery?
Disconnect the battery from the computer and connect the adapter. Check if the computer works on adapter connected.
Connect the adapter and battery and check the status of adapter in BIOS. Restart the computer and tap F2 at Dell. Under “Main” check for the AC Adapter type.
Awaiting your response!