I don’t see anything obviously wrong from the photo.
My next question would have been whether you were getting an error (or just not machine response) but since you don’t see it in the list, I would presume that you are getting a “no connection” type error.
The most likely causes at this point are that the USB cable is bad, or that the USB connector on the circuit board is bad. Do you have another USB cable handy that you could try testing with?
