Sound, Sound Card, Windows XP-Pro

History:
installed windows xp-pro a coule of weeks ago. everything was working fine
including my CMI8738/C#DX PCI sound card, (the onboard card a sis 7012 has
been disabled), last week my sounds quit working, I was able to get it
reinstalled and was working fine til i rebooted. I restored the system to a
earlier time, which worked until I rebooted the sytem. I reinstalled the
dirvers and they worked fine until yesterday. I tried to reinstall them
again....no dice this time... so I reinstalled windows XP-Pro, and also
reinstalled the drivers. The system is telling me that all is working and
winamppro is showing that i am playing sounds but still nothing coming out.
Have tied the speakers on a different system, they work. Have tried a
different sound card (but same type, just new)...no conflicts.

the Problem:

no sounds, although the systems is telling me there is no conflicts, and the
card and mixer is enabled, still no sound.

any suggestions??
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Rockn' Rolln' with the River @ www.urradio.com