Je n'ai plus de son

bonjour voila j'ai desinstaller mes pilotes audio et maintenant je n'ai plus de son.
pouvez vous m'aider svp

Version du plugin
3.0.4 build 0
Version de la base
7
Nom de la machine
PC-PC
Date de la détection
11/12/2008 14:18
Système d'exploitation
Windows Vista Edition Familiale Basique (build 6001) Service Pack 1
Navigateur web par défaut: K-Meleon
Client e-mail par défaut: Microsoft Office Outlook
Antivirus: avast! antivirus 4.8.1229 [VPS 081124-0] 4.8.1229
Antispyware:avast! antivirus 4.8.1229 [VPS 081124-0] 4.8.1229
WinSAT
Note Vista: 2 (Processeur: 4.8, Mémoire vive: 3.9, Graphiques: 2,
Graphiques de jeu: 2.4, Disque dur principal: 5.4 )
Carte mère
SMBios version 2.3
Acer EM61SM/EM61PM
Bios: Phoenix Technologies, LTD R01-B3 02/07/2007 taille: 512Kb
Processeur
AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ (2009Mhz) (L1: 128ko L2: 256ko
)
Chipset
Northbridge: AMD-8131
Southbridge: NVIDIA MCP61
Mémoire
Barrette de 512 Mo None
Barrette de 512 Mo None
Barrette de 1024 Mo None
mémoire windows (cette valeur ne correspond pas exactement à la
mémoire totale physique): 2046Mo
Carte Graphique
ATI Technologies Inc Mobility Radeon HD 3450 (512 Mo)
Lecteurs CD/DVD
ATAPI DVD W DH16W1P LA11 (DVD+R/DL Recorder)
FGVQXG TUV81IZ 1.03
FGVQXG TUV81IZ 1.03
FGVQXG TUV81IZ 1.03
FGVQXG TUV81IZ 1.03
Disque dur
HDT72252 5DLA380 SCSI Disk Device (232.88Go)
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:MCP61 IDE
nVidia Corporation:MCP61 SATA Controller

Réseau
Marvell Technology Group Ltd.:88E8056 PCI-E Gigabit Ethernet Controller

Affichage
ATI Technologies Inc:Mobility Radeon HD 3450

Multimedia
nVidia Corporation:MCP61 High Definition Audio
ATI Technologies Inc:RV620 Audio device [Radeon HD 34xx Series]

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 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]: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

Communications
Motorola:SM56 Data Fax Modem

Bus Series
nVidia Corporation:MCP61 SMBus
nVidia Corporation:MCP61 USB Controller
nVidia Corporation:MCP61 USB Controller
Texas Instruments:TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)

Périphérique USB
Alcor Micro Corp. 8-in-1 Media Card Reader (USB Reader)
Microsoft Corp. LifeCam VX-1000 (USB camera)
Clavier
Standard PS/2 Keyboard
Souris
PS/2 Compatible Mouse
Ecran(s)
Generic PnP Monitor(LG Electronics Inc. (GoldStar Technology, Inc.) )