It was working one day, and then the next it wasn't. I've tried all the common fixes, like checking to see if everything is plugged in correctly, looking in Device Manager to make sure the volume is up and there are no "mute" boxes checked. Device Manager says the card is in working order. All of that, but I'm getting no sound. I know the speakers work because I'm running the sound through a Pioneer receiver and when I set it on "tuner" I can hear sound. So that's not the issue. I'm thinking it's some kind of driver conflict or something, but I haven't added any software lately, so I don't know why things would've changed. The bottom line is, any help you could give me would be appreciated much.