I have been using an uno 3 without any problem, all the software works ok but i just but bought a nano 3 and it wont appear in the serial port. i tried installing the drivers again but cant seem to get the new hardware wizard to come up when i plug the nano in. the lights on the nano are flashing so i know its has power when it is plugged into the computer via the usb. i accessed the hardware wizard through the control panel but cant get it to find the drivers or the Nano. please help