Hey. I had a similar problem and fixed it in the most random way :D. IF you go to control panel > hardware and sound > realtek HD Audio Manager (at the bottom) > Device advanced settings (top right) and it should be on “mute the internal device, when an external headphone plugged in”. Change this to the bottom one, “Make internal and external output devices playback two different audio stream simultaneously” and that actually fixed the problem for me. If this does fix it and the problem suddenly appears again one day, I will go into these settings and change it back as a new update might change it. Hope this helps and good luck!