No mouse or keyboard in safe mode

After the amazing and wonderful Anniversary Update, that fixes nothing but adds other bugs & glitches, I can't use mouse and keyboard in Safe Mode. Before the update, it worked fine. Any solution?
I use safe mode to install new nvidia drivers in safety.

When I launch in Safe mode, there is a message about "app can't be opened with administrator account, try to log with another account".

It's like this, but it only says "app", not Edge or other. http://www.virtualizationhowto.com/w...ge_admin1a.png

I don't know if it can be related. Anyway, there is a solution for this message, but it needs secpol.msc and it's not in Home edition.....

EDIT: I resolved both problems simply logging a local account, then I re-log with my official account.