In the meantime I had the chance to reset everything and install windows 8.1 in English.
Well, I don't have anything left from the other configuration, even from Asus.
(BTW: My personal data were saved)
More than this there's not issue anymore with the hd intel graphics 4000 device.
I'm thinking, if you agree, that you may have a check of this unit, specially partitions where I have had been fidgeting.
And in case, I may try to install or clean install w10.