I am having an issue with a HP dc5000. It uses the soundmax drivers. The sound on this PC just stopped working. The user was using the internal speaker only so I thought maybe that speaker just died or something. Anyway after troubleshooting some I decided to reinstall the soundmax drivers, the driver installation asks you to reboot after the install. When the PC shut down to reboot I heard the windows xp shut down sound so I figured the driver reinstallation fixed it. However when the pc came back up I had no sound again. So I did the driver reinstall again, this time I chose to restart later, and sure enough the sound worked again. So I can reproduce this issue every time. If I reinstall the sound drivers the sound works, if I reboot the pc the sound stops works, if I reinstall the drivers the sound works again. So any ideas?