My PC does not recognize when my headphones are plugged into the back or front of my computer. My monitor usually has 3 options when clicking the sound icon in the bottom right hand corner in order to switch between my monitor speaker and my headphone speakers, this now only has the option of my monitor speakers. I have tried re installing my audio driver and this didn't do anything. I am not sure why this has happened. I haven't been on my computer as frequently these last couple weeks but i have only noticed this problem today. I have had my computer build by the manufacturer PC Specialist and I use Windows 10.