I have a Dell Inspiron 5000. Windows 10 Pro. I had setup 3 identical computers of this model and all went fine. I turned on this one for the first time and the keyboard will not work. I restored to factory settings and still the keyboard does not work. Other than sending it back, does anyone have an idea what might be wrong? This happened right out of the box, nothng loaded and i do not have an external mouse plugged in.