This is the quickest method to fix driver-related issues like can’t find Realtek HD audio manager, Realtek HD audio manager missing and Realtek HD audio manager won’t open. Go to the download page and then download the latest version of the Realtek HD Audio driver for Windows 10. In this method, you have to go to the official website of Realtek and then search for your driver. Option 1 – Manually Update Realtek HD Audio driver There are two ways to update the Realtek HD Audio driver on Windows 10. This article gives you practical solutions for the Realtek HD Audio Manager Not Opening problem. If you cannot open Realtek HD Audio Manager, then you can fix this issue. Fix 2: Reinstall Realtek HD Audio driver.Option 2 – Automatically Download Driver.Option 1 – Manually Update Realtek HD Audio driver.Fix Realtek HD Audio Manager Not Opening.