Updating the Realtek Audio driver in Windows 10 is a simple and straightforward process. Source: How to Update Realtek Audio Driver Windows 10? Installing the Latest Release of Realtek Audio Driver
Select Search automatically for updated driver software.Right-click on Realtek Audio and select Update driver.Locate the Sound, Video and Game Controllers section and click it.Press the Windows key and type Device Manager.Updating Realtek Audio Driver on Windows 10