3
Trying to edit system configuration this is what happens:
System configuration: impossible to save the original startup
configuration for a future restore. Modified settings will be undone.
Impossibile to access the file. The file is used by another process
I installed Windows 10 1703 through UEFI-NTFS with Secure boot disabled and then I enabled it.
I'm using an administrative account
Edit.
The problem was caused by the HIPS (real time intrusion protection system) of Eset Nod32. And that shows HIPS works great avoiding potential malicious software making changes to the system configuration.

Are you using any third-party security programs? – n8te – 2017-10-20T08:21:25.857
Did you try to run it with administrative privileges? – Seth – 2017-10-20T08:26:10.343
Yes I'm using Eset Nod32. And yes I've tried with admin. privileges but nothing changed. – LppEdd – 2017-10-20T09:15:06.107