If you startup Windows with the headphones unplugged, sound is never played through the headphones.Īccording to this article on Dell Support, the 'solution' is to re-install the drivers. But now plug the headphones back in, and sound continues from the built-in speakers (and not the headphones).
Unplug the headphone from the jack, and sound comes through the built-in speakers. Start up Windows with the headphones already plugged into the audio jack, and sound is correctly played through the headphones.