well the correct to install to Dolby Home Theater v4 according to the website https://www.dolby.com/us/en/drivers.html
is to install the latest Audio driver from the manufacturer website and it may come with Dolby Home Theater v4
if it did not come with Dolby Home Theater v4 then it's possible your laptop doesn't support it
you have 3 party driver that people customize with Dolby Home Theater v4 but the problem with that it may only work with a few computer
you also have the risk of installing malware on to system because you never know what will come with customize driver from other people
and not the manufacturer website
is to install the latest Audio driver from the manufacturer website and it may come with Dolby Home Theater v4
if it did not come with Dolby Home Theater v4 then it's possible your laptop doesn't support it
you have 3 party driver that people customize with Dolby Home Theater v4 but the problem with that it may only work with a few computer
you also have the risk of installing malware on to system because you never know what will come with customize driver from other people
and not the manufacturer website