Welcome.

It looks like the driver version must match the installed software application.

I suggest you roll back the driver to Version 7.2.7000.6 to match the Sony installed
Dolby® Home Theater® v4 application.

http://www.dolby.com/gb/en/consumer/technology/pc/dolby-home-theater-v4.html

Personally, I would not blindly follow recomendations from these driverscanner websites.  They can be dangerous as drivers are often modified by Laptop manufacturers to best match their hardware.