Mega won't show up in device manager

Development Tools IDE 1.x
1

I have a mega2560 that won't show up in device manager. When I plug it in, the yellow and green lights turn on but my computer doesn't make a connection sound. I have a uno that will connect with no problem. How can I fix my mega?

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2

Assuming you're using the same cable, and you have ruled out driver problems (either because the uno also has a 16u2 for USB-serial or the Mega worked on the same computer before with nothing dramatic (eg OS reinstall) on the computer that could plausibly mess up drivers that worked before), I would get a new mega.

I have to recommend clones with the CH340G unless you need the additional features of the 16u2, as the 16u2's used on the official ones (and some more expensive clones) seem to be fairly easy to damage.

3

Hello Jorda713,

Thank you for sharing your issue with Arduino community.

I would advise to check the following:

  1. Try a new USB cable making sure it is a DATA USB one and 2.0 port type..
  2. Connect the board to a different computer and check if it has the same behavior.
  3. Install/Update the corresponding core 'Arduino AVR Boards' from Tools > Board > Boards Manager
  4. Update the drivers on the computer if using windows by following these instructions:
    https://www.arduino.cc/en/Guide/DriverInstallation
  5. Burn the bootloader using an additional Arduino board as a programmer. You can find the instructions for this procedure here.
    https://www.arduino.cc/en/Tutorial/ArduinoISP (mod edit)

I hope this is useful!

Regards