I've recently lost all the sound from my Dell xps 210 and can't seem to find a way to get it back. When ever I open the Sound Recorder, I get a message stating that there is no sound device installed. I went back and tried to redownload the sigmatel drivers, but then I got a message saying it wasn't supported. Also, I went through the control panel to get to the master volume controls, and instead of opening I got a message stating there are no active mixer devices available. Can somebody help me pleeeeaaaasssse!!!!!!!!!