Video is bad on windows 10. Dx 12?

Question

Windows

After switching from windows 7 to windows 10, when watching a video on YouTube or just on a PC in the VLC player or from a flash drive, etc., etc. on a black background, if it is in the dynamics, the picture changes there (or especially if, for example, a rainbow in the black sky then the whole sky shimmers in squares) or something happens on it, fuzziness appears as if it were 16 bits and the squares are visible. If it's just black and nothing happens on it, then everything is fine. Proc fx8320e, mother ga-970a-ud3p, vidyaha gtx 1050. Firewood is all installed from off sites. Put codecs to-light does not help.
If I put the driver on the monitor, it gets even worse, everything is generally black in the dynamics, it becomes completely in squares =(
What is most interesting on another computer I installed windows 10 with an MSI 970 GAMING motherboard and a video card Radeon RX 480 from the Microsoft site and completely updated to the latest version the same thing!
It feels like some codecs are missing. Or I don't know some settings? I'm attaching a photo for clarity! On Windows 7 this is not the case.
Here's how on windows 7:
And here's how on windows 10 below (you see on the right on black everything is squares and squares around the letters (as the letters flash)):

Here's another one:

I wrote to the microsoft website, they said:

which is most likely due to the fact that the drivers for your motherboard for the chipset date back to 2016, like asking gigabytes for the latest drivers or let them clearly give a technical answer that does not work correctly in windows 10 with this motherboard.

I wrote in gigabytes:
they assured me that the motherboard works fine with windows 10:
https://www.gigabyte.com/MicroSite/381/w10.html on the site it says that my motherboard GA-970A-UD3P
supports windows 10
Ps Cant with black color in dynamics when watching a video, not only in build 1709 but in general in any build of windows 10
I also tried to install codecs under windows 10 and k-lite of the latest versions. Nothing helps. Wrote to gigabyte about such a problem, they replied:
Good afternoon!

Thank you for using our products and for contacting GIGABYTE TECHNOLOGY technical support.
Here, apparently, the problem is not in the drivers for the chipset, but in the operation of the video card under Directx 12. The problem does not appear in Windows 7, because. Directx 12 is not supported on this OS, but is supported on Win10. And the card works in completely different modes. Test with another video card or contact the service center for diagnostics.
Best Regards,
GIGABYTE TECHNOLOGY

But firstly, the GTX 1050 supports DX12, and secondly, I tried to test with both the RAdeon rx 480 and the GTX 1070 and the problem is the same. Both computers have the same problem. But I would like to deal with the computer first:
Proc fx8320e, mother ga-970a-ud3p, vidyaha gtx 1050. I also tried to update drivers both from the video card manufacturer's website and from nvidia, kolupal flashed bios to the latest versions. Updated all computers through driver pack solution. Maybe I know something in the settings of video cards under Windows 10? Well, the same cannot be that this hardware does not support Windows 10 = (
Here's the current full hd trailer downloaded and launched in MPC-HC:

Answer 1

Black squares when watching a video. How to remove? Monitor marriage or bad monitor?
You already asked the question and didn't answer it.