I installed Alsa-utils but my sound not worked

I use "alsamixer" for select the sound card via F6 key but not have any result.
cat /proc/asound/cards :
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7a14000 irq 46
1 [Intel_1 ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7a10000 irq 46
2 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xf7080000 irq 17
can you tell me how can I write a correct configuration file?
---------- Post added 11-14-14 at 02:09 PM ----------
I installed Alsa-utils but my sound not worked

I use "alsamixer" for select the sound card via F6 key but not have any result.
cat /proc/asound/cards :
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7a14000 irq 46
1 [Intel_1 ]: HDA-Intel - HDA Intel
HDA Intel at 0xf7a10000 irq 46
2 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xf7080000 irq 17
can you tell me how can I write a correct configuration file?