Sorry for digging up this old thread but I promised the forummer to try to replicate the problems and correct it.
TS: I'd recommend that you reset your BIOS to default and re-plug the soundcard to a different port (PCI?) If that doesn't work, try to reformat and update your whole computer. Once your computer has done a full reformat to NTFS and fully updated in Windows. Then only install the soundcard driver from the disc/driver source installer and then restart. It should work that way. Just my 2 cents. Btw, sorry for making you wait so long for this such short reply.
WARNING!: Remember that when you reformat you must REMOVE the soundcard.