I have two brandnew 2009 arduino's here with me (atm. 328, selected ok in the ide). I am able to upload sketches on one but no on the other. When I plug it, I see tx and rx flashing a little and then the program on the atmega starts. my pc (vista) does not seem to see that an Arduino is plugged and the port doesn't show up in the IDE. I have tried to reboot several times. Did I fry the ftdi chip? I did not do anything particular, just plug an xbee shield (same behavior w/ or w/o)
Anything I can do to test what's wrong? Any suggestion at all? I have been unpluggin the usb cable w/o doing anything on vista.
Please, help. Best Regards