Why won't my speakers work?

Why wont why speakers or headphones work?

• OK, I have restored my computer to factory defaults recently and when I went to turn my music on my speakers wouldn't. I tried installing and restarting my computer and it did find new hardware and installed it but it still wouldn't work. I tried plugging in my headphones and that didn't work either. I know for your headphones to work you need your speakers in or for my computer anyway. I opened my volume control and it showed that was sound being given off cause I could see the bar moving up and down while I still had my music on. Help would be appreciated! Thanks!

• Answer:

  If you see the bar moving, try moving the speakers to a different jack (modern computers have 3 or 4 audio out jacks). Sometimes the function of the jack changes after a reinstall.