hello folks lets see if anyone can help me with this issue.

Laptop model: Siragon MM-V100

it used to have win7 and played sound ok, but now i installed backtrack and it doesnt detect any soundcard, here are some usefull outputs

lspci | egrep -i audio

00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
lsmod |grep -i snd

snd_hda_intel          46362  1 
snd_hda_codec          93484  1 snd_hda_intel
snd_hwdep              13232  1 snd_hda_codec
snd_pcm                72878  2 snd_hda_intel,snd_hda_codec
snd_seq_midi           13132  0 
snd_rawmidi            24215  1 snd_seq_midi
snd_seq_midi_event     14076  1 snd_seq_midi
snd_seq                50403  2 snd_seq_midi,snd_seq_midi_event
snd_timer              23911  2 snd_pcm,snd_seq
snd_seq_device         13817  3 snd_seq_midi,snd_rawmidi,snd_seq
snd                    52787  8 snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore              12534  1 snd
snd_page_alloc         13709  2 snd_hda_intel,snd_pcm
aplay -l

aplay: device_list:240: no se encontraron tarjetas de sonido... (no sound card detected)
i really appreciate any help you guys can give me, i'm starting to miss my music.