Ok, so I for some reason Steam wasn't picking up my microphone, so I restarted my computer. And when I started it up, it says no Audio output device is installed. Usually at the bottom right hand corner when I bring up the mixer it says VIA High Definition Audio, and when I go to control panel, Hardware and Sound, manage audio devices, nothing is there. Can somebody please help me? And can you give me a link to the drivers? And also whenever i click on the speaker Icon it says problem detected with Nvidia high definition audio.