I have a Dell D5150. Speakers have always worked and so had the headphone jack(one on front of tower) until my computer crashed and had to completely erase hard drive and start over. I had to install everything from scratch. Now my headphone jack does not work. If I have something playing and plug in the headphone jack it reconizes it because the sould stops on the speakers but nothing will play on the headphones. I have uninstalled the driver and reinstalled again today and no results. Check volumns and everything seeeems ok. HELP!!!!