Realtek HD Sound: For some reason, this sound manager was to blame and the problem went away after you uninstalled it.The causes of headphones not showing up in playback devices are usually associated with some bugs or non-related activities you may have done. Read more: 3 Solutions Quickly Fix the Requested System Device Cannot Be Found. You may have encountered with the problem: when you are trying to listen to audio using headphones on your computer with Windows 10 system, you can’t hear any sound, nor do the headphones appear in playback devices.
