When I plug my NOOK into my PC, it SAYS that I can use my NOOK and continue charging by "ejecting" the NOOK drive on my computer. This doesn't seem to work - I 'eject' per my PC but the NOOK continues to show this screen and is unresponsive. B&N chat said to plug into the wall outlet. Well yes I can do that but not the point. Is it possible to charge with PC and use NOOK at same time? Anyone have success with this?