I'm facing a funny thing right now,
I am working on a project using a board with an ATMEGA2560 and an arduino uno board without ATMEGA328p for the communication.
I was checking signals of one of my transistor when a spark cames out, my computer also shut down. So i waited a bit for the coil to discharge, reboot the computer and verifyed everything. My mouse wasn't working but after an another restart it was solved.
But now the arduino can't be recognized on any port. I tried with only the Arduino Uno board (with ATMEGA328p) same result and after with an another board Arduino Mega (i was expecting it to be recognized) but same result!
So I thought that the USB port fried but the mouse is working, same for USB key. I am going to redownload the IDE but i am starting to lack of ideas.
I wanted to share it because it looks very funny for now (in a few hours not so much i think). I will continue looking for a solution and keep you in touch!