I did not do the registry suggestion because instead, I reformatted my drive, doing a clean install of Win 7 64. (A true clean install reformatting of a new hard drive). I performed all the windows required updates. Before installing any other apps, I tried the StereoLink, and once again, the windows USB drivers did not install. But all worked fine on the Burr-
Brown DAC that I borrowed from my neighbor. So I believe that rules out any 3rd party driver conflicts. I do hope StereoLink works this out. I'm sure it going to be them blaming Mircrosoft, and vice versa, yielding no solution. Really unfortunate. I like the product. Until it's fixed, I'm splitting the output of my sound card between computer speakers and main home amplifier (a poor fix in theory, but it works surprisingly well as long as I add EQ).