When I plug my headphones in the sound comes through my speakers and my headphones. I went to playback devices and my headphones are not even in it. Also awhile ago my sound stopped working and I had to uninstall and reinstall the audio driver, just about a week ago my sound got significantly softer but still comes through the headphones just fine but also comes through the speakers at the same time a lot quieter. I have an HP Notebook PC with windows 10.