I've been looking all around the forum to find a solution but nothing worked...
My case : While deploying my solution on the N+ (using VS 2010), I got an error which has said that it was not able to contact the card. After that, I wasn't able to make my card recognized by my OS (Windows 7 x64)
I tried to perform the "push button while connecting the card"'s thing but nothing happened.
Then I tried to perform a full erase (connecting the 3.3V to the little square under digital pin 0) but nothing changed, I still can't see my card on Windows (I only saw the "USB unknown" the first time then nothing)
So, when I plug my card using the USB connector I have :
- PWR led: ON
- LED led (under digital pin 1 & 2): ON
- Nothing on Windows
Does anybody has an idea ?