I have an issue with my DELL. I am running XP. On my screen the master volume meter is permantely on my screen. It doesn't matter what I do where I go it is always superimposed over everything. I recieve no volume. I go to the check to see if the mute box is checked and it is not. when I try to adjust the sound level the meter will automatically decrease on its own to zero. Any help folks? Yes my speakers are plugged in.