The computer doesn’t actually talk to the Arduino 2560, it actually talks to the tiny Atmega 16U2 (presuming you have a R3 board)
The Atmega 16U2 does all the fancy USB to serial conversion.
Since the board is not recognized by the computer, this chip is not talking.
I would have though power also, but you say the LED is glowing... so Im afraid it sounds rather dead.
I would check it really has 5v on a 5v pin, just as a final check
The Atmega 16U2 does all the fancy USB to serial conversion.
Since the board is not recognized by the computer, this chip is not talking.
I would have though power also, but you say the LED is glowing... so Im afraid it sounds rather dead.
I would check it really has 5v on a 5v pin, just as a final check