»HP Pavilion dv6725us Entertainment Notebook PC
Serial Number: [edited by Moderator]
Product Number: KC301UA
When I got this machine it was running Win Vista 64 and the sound didn't work. I have upgraded to Win8.1 and the sound works sometimes. I get it working and set a restore point while it is working and then when the PC goes to sleep or is turned off the audio malfunctions.
It would seem the system thinks there is no sound device install in the laptop but it is hard wired on the MB.
Does anyone know why this is happening?