My dell 546 has the VIA HD audio installed, but i want to change this for the Realtek HD audio software codec ALC888/888s. I try to update driver but it tells me the system currently has the latest one, this doesn't bother me i prefer the Realtek software and want to find a way to put it on. I have replaced VIA sound drivers and software for Realtek/Avance in the past. Even had an old system with an AMD audio chip and realtek worked perfect on that also.