Dolby, DTS and Spatial Sound greyed out

Following a recent issue. I had to do a fresh install of Win 10.
Following that said install, settings for Dolby, DTS and Spatial Sound are completely greyed out. I had access to all of them as I do have the hardware requirements met.
I believe it could be just a matter of installing the proper driver. I looked on the net and found them but I am bit weary about downloading drivers from an unknown source. Non vetted source I guess.
Any ideas what would be the next steps for me to get back this juicy sound I had before ?

PS: It seems I am not the only one that had this issue but no safe solution in sight on the net..

The driver looks at the hardware and decides to either pass on dolby etc... or just stereo.
Not even guaranteed the driver will ever do that unless modified.
So if your hardware is licensed to work with dolby, then the driver should pass dolby surround to the device, or its the wrong driver, or the device is wrong for the driver.

I had an issue with my stereo TV. The windows sound driver saw the TV as stereo and even though I had my dolby receiver on the audio pass through for the TV, it did not know that. I had to modify the TV monitor driver to tell the PC driver it was dolby capable, then it worked. I have a thread on that in this forum, some could make it work and some could not.

Windows has made it highly convoluted and a pain to get dolby surround out of the PC and one reason is the sound chip maker for the audio chip on the board may not have paid royalties to Dolby, so the sound chip driver just never will work for anything but stereo, unless you get a driver that has been modified to work.

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here is another little know fact, if you have a Firestick you can get dolby 5.1 when watching Netflix. But if you watch Disney Plus, you only get stereo.
To get dolby 5.1 on Disney Plus, you have to have a Firestick 4K.
I went through that last year, so I had to get the Firestick 4K to get decent 5.1 sound on everything.

another fact, you cant get dolby 5.1 on youtube videos, which is kind of bad. I like the sound of 5.1 over stereo.
I get 5.1 dolby on my win 10 PC running WMC, which you can still get from the Green Button forum. So all my OTA TV is recorded in dolby 5.1
I have 8TB of drives recording TV shows.

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I was thinking some more on this dolby issue. If you use a video card that is also passing Dolby through the HDMI port, and you have an spdif dolby receiver, you can get on Amazon an HDMI switch box that splits out the dolby sound stream to an spdif coaxial port, and then you will get dolby into the receiver and not have to deal with sound chip drivers. That is how I do it on my media center PC using a GT730 nvidia card.

If you have a newer HDMI receiver, it also ought to get the dolby signal from the HDMI cable plugged into it from the video card and work without having to deal with any sound drivers.

The only real problem I had was making the onboard sound chip on the motherboard output dolby 5.1 out of its spdif port, and that requires a modified driver, if the driver you have does not work. I was able to find one that was modified and I got dolby 5.1 from the onboard sound chip

If you buy a dolby licensed sound card for a PC, then it ought to work for Dolby sound and you wont need any modified drivers perhaps USB or PCIe, it should just work as they paid the license fee for Dolby.

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One reason I never bothered with youtube TV is I think it has no dolby support. I get dolby fine with WMC and all my local OTA channels for free.

Thanks guys for the reply.
Yes, its activated.
A couple of things that confuse me.
I had the Dolby for many years on this laptop even prior to Win 10. I even had the possibility to use the Win EQ which I do not have any more.
I am attaching a screenshot where you can actually see the Dolby. DTS etc..

it has a Realtek sound chip, so from my reading the released driver for windows will not allow dolby surround as Realtek did not pay Dolby a license fee for these chips on a motherboard, OR the motherboard maker did not pay a license fee to authorize dolby use. I have the same kind of sound chip and did find a modified driver to make dolby work. Mabe windows 10 is different somehow about this dolby license enforcement issue, it may check hardware for that, maybe there is a blacklist or a whitelist, just speculation on why, but it just wont work anymore unless you use a modified driver. That was my experience.

and if someone tells you spdif cant carry dolby surround sound they are wrong.

Sound is back as before with me having a better understanding of the issue. I am posting here for visibility in the hope this may be helpful for others but I truely don't understand the full story.
In no specific order, a lot of moving parts. H264, N version of Windows, and Windows Media Pack.
I went the easiest way. I did a fresh install of my system using the Non N version of Windows. I don't know why, but on the CD I have, it gave me the choices of two versions. Win 10 Pro and Win 10 Pro N. The N install without the Windows Media Pack and the proper drivers I guess...

PS: Forgot to add, you guys are correct. The dolby part is a license issue..