Speakers work but headphones don't. I got anew computer a few days ago and everything worked fine. Today when I wanted to listen to music, no sound came out of my headphones. The computer recognized them as a jackstick, but when I went through the control panel to see if I could set them as default, it only said speakers. What do I do? I don't understand, this computer is brand new and everything worked yesterday... I haven't updated anything, so I'm really confused.