PLEASE, I have no sound

i have Siemens Amilo pr v3515 , the first installation iDeneb 10.5.6 the sound works very well with Azalia audio but I had a connection problem, so I bought a new wireless card broadcom and my pc has detected the wireless card, but the sound does not work anymore ? ,I repeated the installation several times but still the same problem , I have checked if there was a hardware problem and I formatted my pc and win7,linux works fine with audio .

Now when I install azalia audio. I have no sound and I have this message in my device manager no audio built. I repeated the installation and i chose all ALC , the message was changed with this informations :

Intel High Definition Audio:

Device ID: 0x173410CB
Audio ID: 12
Available Devices:

I was able to retrieve information from my sound card with win7:

VIA VT8237A/8251 High Definition Audio Controller

Hardware ids

HDAUDIO\FUNC_01&VEN_14F1&DEV_5045&SUBSYS_173410CB&REV_1001
HDAUDIO\FUNC_01&VEN_14F1&DEV_5045&SUBSYS_173410CB

and others information with linux :

* multimedia
description: Audio device
product: VT1708/A [Azalia HDAC] (VIA High Definition Audio Controller)
vendor: VIA Technologies, Inc.
physical id: 1
bus info: pci@0000:04:01.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: driver=HDA Intel latency=0 module=snd_hda_intel

I appreciate your reading my post, and hope to solve this problem sounds,I hope to hear your ideas and if possible a solution,thank you very much in advance.