I have a HP ElieBook 6930P.
OS: Windows XP.
Sound card: SoundMax HD Audio.
Since yesterday I started to have strange problem. When I played music, the sound was muted automatically. I turned it on using the volume control slide, the sound worked well for 1-2 minutes then it was muted again.
I re-installed driver. I also unplugged adapter, took off battery, hold power button for 1 min and then restart the computer. Both of them didn't solve the problem.
Any suggestion is appreciated. Thanks
Jeffrey