this is a method:
The only thing that doesn't work perfectly and not yet solved is that at the starting windows the writing remain freezed for 30 sec then everything works well
yes, the creator utility doesn't work.
About the manual procedure:
Once the installation stopped working also to me in te second part (Username...). According to me it was because I had mistaken the kind of W7 (home, professional..) during the manual procedure.
I think that because the first part of the installation is general, so the usb3 is regognized for all kind of w7, but the second part is specific (home, professional..) So it's possible that it depends on the choice of w7 you did during the manual procedure (dism...)
I would try to do again the manual procedure being careful to write the commands without making any typing mistakes, because If you mistake and it gives you an error, even if you type again the line something could go wrong.
This is my experience, I'm not an informatic.
Sorry for mistakes (I write from Italy)