mono recording when stereo clicked

I am using Windows 7(64)bit SP1 with a Behringer UF0202 to record LPs. Even though stereo is selected both channels contain the left channel input and the right channel is barely audible. I am using Audacity version 2.0.5. I have tried uninstalling Audible and reinstalling to no avail. I have another computer running Windows XP and Audacity performs as expected with it which tells me nothing is wrong with the input. I have tried separate USB ports with the same result. I have come to the conclusion that either Audible has defective file or my USB bus is defective but I don’t know how to take it further.

This is Audacity. We have no connection to Audible. Koz