Is your Kobo hard drive recognised by the USB ? I had an H20 that registered perfectly via wifi but as soon as I connected it to my Pc I got a please format disc error message. It had to be returned.
Does Calibre recognise your internal memory? If it does then you should be able to send books via Calibre, but if it doesn't you could try a factory reset, if that doesn't work then you need to take it back and get it replaced.
Kobo tech support.........yeah they told me the same thing about Adobe, turns out I knew more than they did. One guy even asked me why I wanted to use my kobo with a pc
