Hey all. I've read the other posts here about this symptom: Device Manager doesn't see my Uno. I have followed the instructions there, turned on hidden devices. But there is nothing hidden under the Ports.
This Uno worked on my PC laptop for a few times after I got it. Also recognized on my Mac. But then at some point, after uploading a new program, the USB bridge broke.
On both computers, Mac and laptop, nothing happens when I plug in the USB.
Also, the boot loader seems to be intact still. When I hit the reset button, the light comes on and blinks rapidly. Power light turns on when plugged into USB.
Any other ideas?