I have a Lenovo thinkpad yoga 14. All of a sudden my HDMI port does not work and my system says there are no audio devices available. When I go to device manager, the sound, game etc option is hidden. I updated my audio driver, in instilled The Conexant audio driver and rebooted my computer, but now it is not getting reinstalled. Every time I try to reinstall that driver, it says no audio device found, cannot reinstall. I’ve even reinstalled windows but even that does not work. Need some help badly!!