Plus de son sur mon pc

Bonjour,
ben je suis pas un expert en pc mais depuis que j'ai reformater mon pc il n'a plus de son du tout ma config c'est : Version du plugin
3.0.3 build 1
Version de la base
5
Nom de la machine
nom-fb9b15d2723
Date de la détection
04/10/2008 09:02
Système d'exploitation
Windows XP Media Center (build 2600) Service Pack 2
Navigateur web par défaut: Internet Explorer
Client e-mail par défaut: Outlook Express
Antivirus: avast! antivirus 4.8.1229 [VPS 081003-0] 4.8.1229
Carte mère
SMBios version 2.4
ASUSTek Computer INC. NODUSM3 1.05
Bios: Phoenix Technologies, LTD 3.07 08/02/2006 taille: 512Kb
Processeur
AMD Athlon(tm) 64 Processor 3500+ (2204Mhz) (L1: 128ko L2: 512ko )
Chipset
Northbridge: NVIDIA C51
Southbridge: NVIDIA nForce 410/430 (MCP51)
Mémoire
Barette de 512 Mo 533 Mhz None
mémoire windows (cette valeur ne correspond pas exactement à la
mémoire totale physique): 446Mo
Carte Graphique
nVidia Corporation C51 [GeForce 6150 LE] (256 Mo)
Péripheriques IDE
WDC WD1600JS-60NCB1 10.02E02 (SATA II, 149.05 Go, tampon: 8 Mo)
Lecteurs CD/DVD
TSSTcorpCD/DVDW TS-H652L0603 (DVD-R/DL sequential recording Recorder)
Disque dur
WDC WD1600JS-60NCB1 (149.05Go)
Generic USB CF Reader USB Device
Generic USB MS Reader USB Device
Generic USB SD Reader USB Device
Generic USB SM Reader USB Device
Cartes PCI/AGP
Stockage
nVidia Corporation:MCP51 IDE
nVidia Corporation:MCP51 Serial ATA Controller
nVidia Corporation:MCP51 Serial ATA Controller

Réseau
RaLink:RT2561/RT61 802.11g PCI

Affichage
nVidia Corporation:C51 [GeForce 6150 LE]

Multimedia
nVidia Corporation:MCP51 High Definition Audio

Mémoires
nVidia Corporation:C51 Host Bridge
nVidia Corporation:C51 Memory Controller 0
nVidia Corporation:C51 Memory Controller 1
nVidia Corporation:C51 Memory Controller 5
nVidia Corporation:C51 Memory Controller 4
nVidia Corporation:C51 Host Bridge
nVidia Corporation:C51 Memory Controller 3
nVidia Corporation:C51 Memory Controller 2
nVidia Corporation:MCP51 Host Bridge
nVidia Corporation:MCP51 Memory Controller 0

Ponts
nVidia Corporation:C51 PCI Express Bridge: C51 PCI Express Bridge
nVidia Corporation:C51 PCI Express Bridge: C51 PCI Express Bridge
nVidia Corporation:MCP51 LPC Bridge
nVidia Corporation:MCP51 PCI Bridge: MCP51 PCI Bridge
nVidia Corporation:MCP51 Ethernet Controller
Advanced Micro Devices [AMD]:K8 [Athlon64/Opteron] HyperTransport Technology
Configuration: K8 [Athlon64/Opteron] HyperTransport Technology Configuration
Advanced Micro Devices [AMD]:K8 [Athlon64/Opteron] Address Map: K8
[Athlon64/Opteron] Address Map
Advanced Micro Devices [AMD]:K8 [Athlon64/Opteron] DRAM Controller: K8
[Athlon64/Opteron] DRAM Controller
Advanced Micro Devices [AMD]:K8 [Athlon64/Opteron] Miscellaneous Control: K8
[Athlon64/Opteron] Miscellaneous Control

Bus Series
nVidia Corporation:MCP51 SMBus
nVidia Corporation:MCP51 USB Controller
nVidia Corporation:MCP51 USB Controller
Agere Systems:FW323

Périphérique USB
Alcor Micro Corp. Hi-Speed 21-in-1 Flash Card Reader/Writer (Internal/External)
(Mass Storage Device)
Clavier
Enhanced Mulmedia PS/2 Keyboard
Souris
Souris compatible PS/2
Ecran(s)
Écran Plug-and-Play( LM-1702)
merci d'avance.

Configuration: Windows XP
Firefox 3.0.3