I have an all in one Inspiron that I've had nothing but trouble with using the headphone jack. I've performed about a dozen trouble shooting steps suggested by the Dell support techs with no permanent solution. The only way I can get sound back through my headphones if I unplug them is to download an audio driver that was sent to me. You have to uninstall the current driver first though. It is a serious pain in the butt. If you search the internet you'll see this is a very common problem yet Dell has no answer. Just let me say this is first first and last Dell computer. If you plan on using headphones you most likely want something other than a Dell.