Ahh well that is a new case, but still did you compare the diagrams for wiring to be sure? Here is your PDF, same as smildon
http://www.raidmax.com/Manuals/smilodon.pdf

I had a look and it seems your fron Audio wires are all singles right? If so you should have no problems hooking them up as HD Audio

Clear CMOS may help, yeap worth a shot for sure