first off, you need to learn that the SOUND audio system may not be just one simple chip, OK?
but a group of chips that DELL designers added and form sound, with even special mixer chips and more. lots more....ok?
the only valid sound files matching your PC and OS are at dell , no place else, except they are on Microsofts PnP plug and play servers (ask can demo that to you), that is because dell gives them to MS and are placed there, (qualified drivers)…
if Dell shows no updates avoid the DARK side, and leave them be, or you can really mess things up easy.