I have a Pro Micro that does not show up as a COM port on either a Windows XP system or a Windows 7 system (it is nowhere to be found in the device manager, I've tried everything!).
The very first time I connected it (to the Windows 7 laptop) it came up as an Arduino Leonardo and I was able to upload the test sketch from Sparkfun (flashing the TX/RX LEDs). Since then the board is completely invisible to teh computer. I have tried all the usual reset-while-uploading tricks but nothing works, I get the error:
"Arduino: 1.6.5 (Windows XP), Board: "Arduino Leonardo"
Sketch uses 7,418 bytes (25%) of program storage space. Maximum is 28,672 bytes.
Global variables use 254 bytes (9%) of dynamic memory, leaving 2,306 bytes for local variables. Maximum is 2,560 bytes.
processing.app.debug.RunnerException: Couldn't find a Board on the selected port. Check that you have the correct port selected. If it is correct, try pressing the board's reset button after initiating the upload.
Couldn't find a Board on the selected port. Check that you have the correct port selected. If it is correct, try pressing the board's reset button after initiating the upload." The thing is there is no port to select... It is as if the bootloader is no longer there and the AVR's USB has checked out. Any ideas? Do I need to reolad the bootloader and if so is there a way without an official AVR programmer? Thanks for any and all ideas! Pip6