Hi again, I’ve decided to go with a clean install of Windows and now everything is working fine (of course). Thanks to everyone for your help, you people are awesome!

Launching offline Regedit from command prompt worked. I've loaded all my registry backups but nothing worked. I've also seen that the registry looks much more empty than its usual.
I've then tried,...

Startup repair indeed created a "srttrail", I'm posting it here:

https://1drv.ms/t/s!ArIMqaZlxDRqhJYqPpetKcf58p5lJg?e=MIK434

The registry editing was...

1. Remove "WOW6432Node" in...

Ok I've tried running Sea Tools first but it doesn't matter which one of the first 2 icons (that appear on startup) I choose, in the end everything turns quickly to a screen displaying the current...

System Restore says there are no Restore Points to get back to. Also what kind of 3rd party softwares do you suggest?

Hi everyone, today I made a change in the registry of my Windows 10 computer in order to install a software that otherwise couldn’t be installed on my D drive (see here for details: Solved: Install...