Problem connect Mega 2560 R3

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i have problem connect mega 2560 r3 , can't driver ide 1.0.6 working correct. can see board under "unknown device" in device manager when connect computer.

i updated driver in device manager / ports com&lpt / arduino llc , select driver "arduino mega 2560. after update message driver found not correctly installed , device not working. (code 10). mega visible under com&lpt instead of "unknown device".

reinstalled ide, changed usb-cable, restarted computer, nothing helps. in device manager can see mega @ port 22 or 24 depending of usb-port. tried using different usb-port , deactivate/activate. led "on" on , led "l" flashing. chip atmega 2560 16au 1406. using windows 7 (64bit)

i have searched solution on internet forums , faq found nothing helps. found similar problems solutions don't work.

tried , don't know do, first arduino , need help.

paul

post link got boards from, way usb serial chip used can double checked. failing post picture of board itself.


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