Fix Realtek Audio Not Working After Windows Update

Problem overview

After a recent Windows Update, your computer produces no sound. The audio icon in the taskbar may show a red X, or the Realtek High Definition Audio device may be missing from your sound settings or replaced by a generic “High Definition Audio Device.”

Common causes

• Windows Update automatically replacing OEM Realtek drivers with incompatible generic ones
• Corrupted audio driver files during the update process
• BIOS settings getting reset and disabling the onboard audio controller

Solution 1: Roll back the audio driver

1. Right-click the Start button and select Device Manager.
2. Expand the Sound, video and game controllers section.
3. Right-click your Realtek Audio device and select Properties.
4. Go to the Driver tab and click the Roll Back Driver button.
5. Select a reason for rolling back and click Yes. Restart your computer.

Solution 2: Block the bad update using wushowhide

If rolling back works but Windows keeps reinstalling the broken driver, you need to hide the update.

1. Download the wushowhide.diagcab tool from Microsoft (available via direct download links on community forums).
2. Run the tool and click Next.
3. Select Hide updates.
4. Check the box next to the Realtek audio driver update in the list.
5. Click Next and allow the tool to apply the changes.

Solution 3: Verify BIOS audio settings

1. Restart your computer and press Del, F2, or the appropriate key to enter your BIOS/UEFI settings.
2. Navigate to the Advanced or Integrated Peripherals section.
3. Look for a setting named HD Audio Controller or Onboard Audio.
4. Ensure the setting is changed to Enabled.
5. Save changes and exit the BIOS.