One moment you're jamming out to your favorite band on Spotify, and the next, complete and utter silence. Maybe you have your headset on while playing an online game with your friends, and then suddenly can't hear their chattering voices anymore.There are many reasons why the sound is not working on your laptop. It could be a problem with the application or just your audio jack. In some cases, the issue is a simple fix, and then in others, you can't get a solution without…