I read thread you suggested, but I did not overclocked or touched anything with RAM memory. It is 3200, no overclocking or else, used them out of box without any tweaks. Weird situation completely. Something is corrupting hive files every time. Funny thing, Windows 11 on my dual boot system booted correctly, I had to reinstall GPU drivers only, since it took some older versions. On my Windows 10, it never booted at all. I created both EFI partitions, easy job, but could not start Windows 10, although it seems like it started, I can see it on network when I use my laptop and I can brows shared folders on Windows 10 machine. My thought, explorer does not start since GPU driver creates this situation. I cannot boot it in safe mode also, by F8, the same situation black screen with moving cursor. Is there anything more I could try?