Hello everyone, here's my problem : i have bought an arduino r3 few months ago from an official seller, and it was working great on my computer, wich had windows 7 (i had some troubles at first with the drivers, but I installed them manually and it worked fine)
i had some hard drive problems lately, and had to reinstall a new windows, and since then, i can't make my arduino work (I have windows 7 ultimate, on 32 bits)
when i plug the arduino, it light up, but i have absolutly nothing on my computer, even on the device manager, i don't have any "unknow device"
thank you for your help ! (and excuse my english, i tried to write the best i can ^^")