Bootloop after playing video with MPC Classic.(Corrupt driver/DX9?)

Upon trying to play a video (ts. recording if it matters) with MPC Classic, the message: "DX9AllocatorPresenter failed D3DERR_NOTAVAILABLE" appeared. On the next boot/ever since, I am stuck in a bsod/bootloop with the "Critical service failed" code and all known remedies including automatic repair and every possible advanced startup setting such as "disable driver signature enforcement", safe mode etc. seems to fail. This happens for the third time within this computer's first year (always same circumstances which also prolly signals that this isn't a hardware issue, hopefully!) and this time system restore also fails (the only solution that did the trick previously), and I'd really REALLY prefer not having to format/reset Windows once again. But even if I do that, I need to find the cause of the issue so it doesn't happen again.

My guess is that sometimes MPC Classic encounters a problem with a .ts video file which somehow seems to corrupt Direct X and/or Nvidia Video Driver, creating the bootloop. I could be wrong of course.
I've got access in the recovery cmd and I've also made a Hiren bootable rescue flash drive so I've also got access to my hard disks and some basic tools. Also tried opening a command prompt during my Hiren boot to test some suggested fixes found online:

Code:

  x:\Windows\system32> c:
  C:\DISM /Online /Get-Drivers

and/or

Code:

  C:\DISM /Online /Cleanup-Image /ScanHealth

result in:

Code:

Error: 50
    DISM does not support servicing Windows PE with the /Online option

Code:

C:\>SFC /scannow

results in:

Code:

  Windows Resource Protection could not perform the requested operation.

If my assumption is correct, maybe if I was able to somehow uninstall and/or reinstall Nvidia driver and/or Direct X via the Hiren Boot or Windows Recovery cmd line would do the trick?

Or if I am wrong, is there anything else I can do to repair the problem and not have to reset/reinstall Windows?
If anyone has any ideas how to solve or even troubleshoot this one, (the most recent .dmp file in minidumps seems to be modified a month ago, I've also checked System.evtx with a program called "Event Log Explorer" but last event is a few hours before the first BSOD - and they aren't of the "error" or "critical type", maybe I need to check a different evtx file?) I'd be more than greateful. Thanks a lot.

Windows 10 1909

Ryzen 3900x

Steel Legend X570

MSI Nvidia 1660 Super

32 GB Corsair Ballistix GB

Do a clean install of Windows 10, and, instead of downloading random malwares from the interwebz, go to Codec Guide: K-Lite Codec Pack - For Windows 10 / 8.1 / 7 / Vista where you can grab the latest version of K-Lite Codec Pack Full─and also grab the latest update for it that comes as a separate installation package that can be downloaded separately from there also. (The 'Full' also includes the madVR video renderer, and that I use with MPC-HC because I find that it is the only way to ensure butter-smooth playback of all my large video files of various many different formats.)