My problem is that I cant connect my Arduino UNO R3 (Funduino) via USB to my PC.
It worked well for the last few days but today i received after I wanted to upload a error that it is not connected. So I searched for the correct driver at the hardware manager, which I found after a longer time because all tutorials on the internet not worked for my problem. Then I got an error message "This device cannot start (Code 10)". And at this point I have no idea what i can do next to fix that.
As I wanted to install the driver you attached I saw that my arduino was detected as the old COM3 Port of the last days and it is working fine. I dont know how that happend but I am happy that my problem is solved.
This topic has fallen by the wayside, but here is a slightly different cut.
I too had a problem where Windows 7 STOPPED talking to the Arduino UNO and complained in Device Manager.
I reloaded and rebooted everything in sight, no joy. Used a different USB port, different cable, nada.
I then read this topic where someone suggested trying a different PC.
So I did, on an old XP laptop, and the Arduino worked.
I then brought the Arduino back to the first PC, where it wasn't working, and Lo! and Behold, it is working again on the Windows 7 machine.
This tells me that something odd happened to the Arduino, and nothing to do with Windows, hardware, cables etc.
I hope this note will help someone out there (a) to fix their Arduino and (b) that the Arduino folk might debug whatever it is that upsets the Arduino.
Because I do not seem to be the only one getting into this bind.