: Enter your device's Serial Number or SNID and look for Realtek or Conexant audio drivers, which often include the Dolby bundle.

Dolby Home Theater v4 (DHTv4) is a digital signal processing (DSP) suite designed to overcome the physical audio limitations of PC hardware, transforming thin speaker output into a cinematic surround sound experience

Go to Device Manager, right-click the audio driver, select "Update Driver," choose "Browse my computer," and point it to the Dolby driver folder.