Solved. Turns out the ITCH installer refused to launch the USB audio driver installation and therefore, the controller wasn't recognized. After installing in 2 other computers successfully, i noticed on the ITCH hardware panel that the drivers installed byt ITCH were the Novation USB Drivers 2.1.0, so i went to the Novation downloads section, downloaded this,
www.novationmusic.com, installed it and voila!, recognized by Windows and ITCH without problems.
My suspicion is something related with Installshield is not completely vanilla on this computer, so if you run into the same problem just go ahead and install the USB Driver like I mentioned before.
Take care,
MADMAN