Some problems with keybindings

Hi to all,

I'm Germano from Italy.

I'm using emacs 25.1.1 on windows 10 64 bit.

I'm trying to map left window key but I've some problems.

I set w32-pass-lwindow-to-system to nil, and w32-lwindow-modifier to 'super.

Some keys are recognized, for example win+f9, win+f10, but win+j is not 
recognized.

There is a way to pass left window key to emacs? Perhaps with 
autohotkey, but I don't know how to do this.

I tried  to register alt-tab with w32-register-hotkey, but it doesn't 
work...

Some suggestions?

Thanks!