I figured it out for those who may have the same issue.. I was using 13.1 drivers because I have 6 cards, well I modded the 13.12 drivers to allow 6 cards, and now the Sgminer works fine with the new drivers..
PM me if somebody wants the modded INF file.
I could use that modded INF files as I am having the same issues with 6 x GPU (7950) on a WIN 8.1 system. The 13.12 work fine for 5 GPU's but the 6th card does not and I have the error in device manager (code 43). Only the tech Power Up 13.1 drivers will work for 6 GPU's but not for X11 coins. I get HW errors and no accepted shares. Right now I am using the 13.12 drivers with the 5GPU's and can mine Scrypt, Scrypt-N or X11 without any errors. Sent you a PM in case you do not see this message. I could definitely use a modded INF file to get the 6th card working with the latest 13.12 drivers.