I decided to format and now I'm setting up my laptop again.
Everything is fine, except two days that I have to waste to install and set up everything again.

I am almost certain that this is the cause if the problem. I used ccleaner right before the problem occurred. The weird thing is that I restored the registry files after that with no luck....

That's right, powrshell is fine.
The problem with the illegal character is generally what I think causes the whole problem.
Thanks again.

Yes, of course I run it as admin, you can see it on the top of the Cmd window.
Um...sorry, I can't find the dash that I missed. Actually I copy pasted, so I think all the commands are fine.
Here...

Unfortunately I faced problems on many steps of the process.
1. "specify settings for optional component installation and component repair" was fine.
2. "WSReset.exe" opened windows store, I guess...

Thank you a lot for your answers, I will try and come back to you!

Yes, I have used the troubleshooter already with no luck.
I will come back in one week with news from Hexagons solution.

Thank you very much for taking the time to respond.
As I'm now abroad, I will test this in one week.
Do you think this is my best bet?

Hello to the community.
George from Greece here and I start my posts with a problem (what else?). :(
When I try to download and install my two updates ( Cumulative Update for Windows 10 for...