iTunes Black Screen -- no video playback, none ! ...not even movie trailers in iTunes, not even dowloaded

iTunes 12.9.5 (latest), Windows 7 Pro 64 bit. This started happening 2 days ago, when I rented a movie that was in French (which I did not know) and stopped just after a few minutes. Then I rented another movie, when I tried to stream it I got a black screen forever. Thought the internet was to busy for streaming, so I clicked download and left it to do so. It apparently downloaded but again it won't play. Also, none of my previously bought and downloaded movies play either, the trailes in the iTunes movie Store won't play, no streamed content will play. My music does play, as do my home movies. Internet search for this issue makes reference to Quicktime, but I have no quicktime on my machine, mind you, trying to fix this issue I un-installed iTunes, and reinstalled manually, by downloading the installer. I also had been having troubles with updates, and iTunes not liking the "signature" of the new version download.

HELP !!!! I have already spent money on one rental that I could not play and has already expired ! and I cannot play any of my video content TV shows, or movies.

I've tried re-starting Windows, re-starting iTunes, and ITunes helper, signed in and out of my Apple account within iTunes, and significant time searching for a solution in the Web with no luck. YouTUbe videos play fine. The issue is with iTunes video playback, not anything else in my machine, I do not think. My machine is Authorized for playback in iTunes. All seemed to work fine middle of last week...

HELP !! ...please

-njaimo