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Arduino uno board not detected when connected via USB no matter what OS

I was working with Arduino in Win 8.1, when suddenly it stopped work. I tried to reinstall the drivers and IDE several times, but it didn't solved.

In Win 8.1, when I plug the arduino, I get the pop up message:

USB Device Not Recognized in Windows

Also, when I try to upload a sketch, I get this error in Arduino IDE:

avrdude: ser_open(): can't open device "\\.\com5": the system cannot find the file specified

I switched to Linux (Debian Jessie 64 bits), but it also doesn't get recognized, and I getting the same error, only the port Is different.

I am guessing is a problem with avr, but I don't know what can I do about it.

Other symptoms:

  • In both systems the port tool in IDE is grey, so I can't choose a port.

  • When I press the reset button in Arduino, nothing happens.

  • The led L (13) is constantly shinning. It never blinks or stops.

Solutions I tried:

  • Reinstall drivers
  • Modify the preferences.txt file to change the COM port
  • Fall back to a previous IDE version
  • Change the usb cable
EGS
  • 101
  • 2