I recently put together a new box which includes a Soyo KT400 Dragon Ultra Platinum motherboard, which comes with the C-Media CMI 8738 audio chip. I can't get any sound to work. I've uninstalled/reinstalled the drivers/apps for the audio chip a number of times. The most sound I ever get is a split-second piece of the XP startup music after rebooting -- I hear it for a brief moment then it stops. No other system/audio sounds ever work. Running XPsp1a. I ended up disabling the c-media chip and putting in my old Soundblaster Live card and that works fine.
Any ideas what might be wrong with the c-media sound?