No sound after install FC2 while has sound during installation

[Dark Silver]

When I was installing the Fedora Core 2, Soundcard detection runs
succusessfully. However, after installation, I am no longer able to
hear any sound. Audio Devices shows:
---------------------------------------------------------------------------------
The following audio device was detected
Vendor: VIA Technologies
Model: VT8233/A/8235/8237 AC97 Audio Controller
Module: snd-via82xx
-----------------------------------------------------------------------------------