May want to check BIOS/firmware updates and as well as in Device Manager right clicking your audio device and checking for an updated driver. Can also from Device Manager uninstall audio device, reboot and let it reinstall.
Sometimes when I start up my PC, the headphone jack will not register any output I plug in to it. It will not show up under device manager or sound settings, not sure what I should do. Seems to be a hardware issue so I will get it checked out at a PC repair shop, but if there are any known fixes let me know
Dell Inspiron 3891 - Headphone jack not working