In my laptop, I have installed FC6. My sound card is not working.

My laptop configuration is, AMD Athlon 64 bit, nvidia Geforce 7000 series inbuilt network and sound card. I downloaded the driver from nvidia portal. The network and graphics card is working fine. But sound card is not working. Early I installed ALSA, OSS and xmms player with mp3 plug-in. When I played a mp3 song, the software is playing wel; but I cant get any sound. Even, i tested the sound detection option. It has detected the hardware. But not giving any sound.

Help me to solve this problem.

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