Probleme de carte son

Bonjour,jai besoin de votre aide svp
j ai passer de windozs vista vers windows xp puis au nouveau demarage jai perdu le son.,a configuration est la suivante:
Version du plugin 3.5.2 build 1

Version de la base 11

Date de la détection 02/09/2009 22:16

Nom de la machine atiki-b5983d43b

Système d'exploitation Windows XP Professionnel (build 2600) Service Pack 2
Navigateur web par défaut: Internet Explorer
Client e-mail par défaut: Outlook Express
Client de groupes de discussions par défaut: Outlook Express
Antivirus: AVG Anti-Virus Free 8.0


Carte mère SMBios version 2.4
ECS Nettle3 2.2
Bios: Phoenix Technologies, LTD 5.17 04/23/2008 taille: 1024Kb


Chipset Northbridge: NVIDIA MCP61
Southbridge: NVIDIA MCP61


Processeur AMD Phenom X3 8450 Toliman Socket AM2+ (940) (@65 nm) 2100 Mhz ( L1I: 3 x 64 Ko, L1D: 3 x 64 Ko, L2: 3 x 512 Ko, L3: 2048 Ko )


Mémoire Mémoire physique totale: 4096 Mo, Type: DDR2, @401.9MHz, 6.0-6-6-18-2T
DDR2 Samsung M3 78T2953EZ3-CF7 1024 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)
DDR2 Samsung M3 78T2953EZ3-CF7 1024 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)
DDR2 Samsung M3 78T2953EZ3-CF7 1024 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)
DDR2 Samsung M3 78T2953EZ3-CF7 1024 Mo PC2-6400 (400 Mhz) (6.0-6-6-18)


Périphériques IDE ST3500630AS 3.CHN (SATA II, 465.76 Go, tampon: 16 Mo)


Lecteurs CD/DVD Optiarc DVD RW AD-7201S51H0E (DVD+R/DL Recorder)
HUAWEI Mass Storage USB Device


Disque dur ST3500630AS (465.76Go)
Generic USB CF Reader USB Device
Generic USB MS Reader USB Device
Generic USB SD Reader USB Device
Generic USB xD/SM Reader USB Device
HUAWEI SD Storage USB Device (0.94Go)


Cartes PCI/AGP Stockage
nVidia Corporation:MCP61 IDE
nVidia Corporation:MCP61 SATA Controller
nVidia Corporation:MCP61 SATA Controller

Affichage
nVidia Corporation:G96 [GeForce 9500 GS]

Multimedia
nVidia Corporation:MCP61 High Definition Audio

Mémoires
nVidia Corporation:MCP61 Memory Controller
nVidia Corporation:MCP61 Memory Controller

Ponts
nVidia Corporation:MCP61 LPC Bridge
nVidia Corporation:MCP61 PCI bridge: MCP61 PCI bridge
nVidia Corporation:MCP61 Ethernet
nVidia Corporation:MCP61 PCI Express bridge: MCP61 PCI Express bridge
nVidia Corporation:MCP61 PCI Express bridge: MCP61 PCI Express bridge
nVidia Corporation:MCP61 PCI Express bridge: MCP61 PCI Express bridge
Advanced Micro Devices [AMD]:K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration: K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration
Advanced Micro Devices [AMD]:K10 [Opteron, Athlon64, Sempron] Address Map: K10 [Opteron, Athlon64, Sempron] Address Map
Advanced Micro Devices [AMD]:K10 [Opteron, Athlon64, Sempron] DRAM Controller: K10 [Opteron, Athlon64, Sempron] DRAM Controller
Advanced Micro Devices [AMD]:K10 [Opteron, Athlon64, Sempron] Miscellaneous Control: K10 [Opteron, Athlon64, Sempron] Miscellaneous Control
Advanced Micro Devices [AMD]:K10 [Opteron, Athlon64, Sempron] Link Control: K10 [Opteron, Athlon64, Sempron] Link Control

Bus Series
nVidia Corporation:MCP61 SMBus
nVidia Corporation:MCP61 USB Controller
nVidia Corporation:MCP61 USB Controller
VIA Technologies, Inc.:VT6306 Fire II IEEE 1394 OHCI Link Layer Controller



Périphérique USB Huawei Technologies Co., Ltd. E620 USB Modem (Périphérique USB composite)
Huawei Technologies Co., Ltd. E620 USB Modem (HUAWEI Mobile Connect - 3G Modem)
Huawei Technologies Co., Ltd. E620 USB Modem (HUAWEI Mobile Connect - 3G Application Interface)
Huawei Technologies Co., Ltd. E620 USB Modem (HUAWEI Mobile Connect - 3G PC UI Interface)
Huawei Technologies Co., Ltd. E620 USB Modem (Périphérique de stockage de masse USB)
Fitipower Integrated Technology Inc Multi car reader (Périphérique de stockage de masse USB)


Clavier Clavier standard 101/102 touches ou clavier Microsoft Natural Keyboard PS/2


Souris Souris compatible PS/2

et merci infinement.