I need a little more information, what is the make and model number of you computer, or if custom built what is the motherboards make.
Look again at device Manager under Sound, video and game controllers, expand and look for a listing that just gives sound, if we can identify the sound device we can get an updated driver.
If you can't find this information download Belarc Advisor here
[color=#000020]https://www.belarc.com/free_download.html[/color]
and post the findings.