Anyone know why my sound keeds getting set to mute? It gets set to mute every once in awhile, I don't know why.

Also, on related question, I have a set of Bose ear phones, the kind you stick in each ear (see thumbnail). The problem is that sound comes out one ear but not the other. I've checked the balance setting on the computer and both left/right are both set to the same thing, the volume setting is as high as possible, and I have tried wiggling the end of the cord that plugs into the computer. Nothing seems to correct the problem. Any ideas?

Shot in the dark, but does it get set on mute whenever you press a key or button?

Maybe a button is set as a mute shortcut, and whenever you press it, it inadvertently mutes