Hi,
i think found what was the problem.
When i run "Windows_Repair.exe -silent" through cmd, normally i'll leave that cmd windows opened.
Windows Repair will stop in the repair nº 7, if i leave the cmd window that i used to execute "Windows_Repair.exe -silent" opened.
If i close it after i run the command (or even when it's stopped in the repair nº 7), everything works fine, and Windows Repair runs will until the end.
Thanks!