Now, head over to the Device Manager option again > Double-click on Sound, video, and game controllers > Here you should see that the ‘Realtek High Definition Audio’ is changed to ‘Dolby’.Wait for it to successfully install on your PC > Click on Close.Just click on Yes (Install this driver software anyway) to proceed.Click on Next > You’ll receive a warning message ‘Update driver warning’.

Click on Open > Then select OK > Select the Model from the list that you want to install on your computer.

Go to 32-bit or 64-bit according to the system type of your PC > Click on Drivers.

Next, click on ‘Have disk’ > Select ‘Browse’ > Go to the extracted folder of the Dolby Home Theater v4 file that you’ve downloaded recently.

Then select ‘Let me pick from a list of device drivers on my computer’ from the next screen.

Now, select Update driver software > Click on Browse my computer for driver software from the new pop-up window.

Double-click on Sound, video, and game controllers > Right-click on the dedicated sound driver that you’re using on the PC.

Now, press the Windows + X keys to open the Quick Access Menu > Select Device Manager.

Make sure to download the Dolby Home Theater v4 file on your PC from the link above and extract the compressed file into a folder.

Once you receive the ‘The operation completed successfully.’ message on the command prompt window that means you’re ready to go.

Now, copy and paste the following command line on the command prompt window and then hit Enter to execute the driver signature enforcement.

If prompted by UAC, click on Yes to allow the admin access.

Press the Windows + X keys to open the Quick Access Menu > Click on Windows Terminal (Admin) or Command Prompt (Admin).

First of all, you’ll need to disable the Driver Signature Enforcement feature on your Windows computer.

How to Install Dolby Home Theater v4 on Windows 10, 7, and 8.1 (32-bit and 64-bit)

Dolby Digital Plus Home Theater | Dolby Home Theater v4.

Missing dolby audio decoder