New 3D user with very good Cura impressions, but a surprising with unsolvable problem ..

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Hello,
I have Ender 3 Pro for 2 months, I tried several popular slicer programs, but I most liked Cura.. I think I learned to use it well and made 4-5 profiles very suitable for me and I had fun with almost always successful 3D prints for 2 months (about 3 kg printed)
Suddenly, however, the program stopped working and I have no solution of the problem. For 3 days I tried everything I saw and nothing worked.
At startup, the program stays with the taskbar as working, but absolutely nothing else happens. After dozens of attempts to fix the problem, the best I managed to achieve is that sometimes the startup screen is displayed and remains in the position of loading plugins...and again noting more happend..
I tried all the popular solutions but nothing worked.
Complete uninstallation and reinstalled on new and old versions .. does not work
remove Visial C ++ libraries as described .. reinstall..any combination..does not work
Clearing registers, uninstalling the program ... everything possible does not work.
Video driver update (Nvidia GTX 1080) .. does not work
A problem I think (but I'm not sure) appeared after the latest updates of Windows 10 (20H2).
I think a few days before it stopped working, the startup process had become too long.
The situation for me is completely unreliable at the moment and I will have to switch to using another program ... or another computer. unfortunately quite inconvenient for me solutions, but I can not afford a complete reinstallation of the computer in question ..
I do not know why such a popular and successful program behaves in such a strange way, I saw that other reports of such behavior have been published ..