When I tried new Phoniex2 it gave me - u not found.
I know it is a some software issue not a hardware
Check the console?
I wrote a quick easy setup guide for cgminer on win7 here: https://www.ozcoin.net/content/win7-cgminer-setup-guide
for those that prefer linux there is an excellent guide to going from clean install to mining included in the cgminer folder
hope thats a help
Graeme