Sorry I won't be taking returns on this deal, but I'll be glad to walk you through my exact setup with windows to get all 4 cards working if you want.
Also for the 1X risers, if those are just standard extenders maybe you can try to short 2pins as shown in this thread:
https://bitcointalk.org/index.php?topic=36061.0I know a forum member sells pre-shorted cables here but you can easily do it on your own with a wire.