Enceinte qui ne fonctionne pas mais qui sont reconnues

bonsoir , comme il est indiqué dans le titre mes nouvelles enceinte les , les logitech X-530
sont reconnues par mon pc mais aucun son ne sort , quand je vais sur l'icone haut parleur en bas a droite sous seven je vois bien que le son varie avec la barre verte et la grise et c'est bien sous l'icone de périphérique de mes enceintes .j'ai vus sur d'autre forum certains avait le même problème a cause du nombres de canneaux de la carte son , j'ai verifié sur le mode d'emploi j'ai essayer les 3 choix qui s'offres a moi en debranchant chacun leur tour les 3 cables reliant le systeme audio au pc ( orange ; vert et noir) mais rien ne ce produit . j'ai mis a jour les driver de la carte son ( la ou il y a un triangle jaune avec un "!" dedans en allant dans : demarrer>clic droit ordinateur> proprieté> gestionnaire de periphérique le triangle est a coté de : periphérique high definition audio )
j'ai testé les 2 positions du bouton d'alimentation ( haut : I ( une barre verticale) bas: un rond et une barre verticale ( comme le bouton de votre télé) il me semble que la bonne position est en haut .
j'ai aussi fais un dxdiag pour vous fournir plus d'info sur mon materiel audio :

-------------
Sound Devices
-------------
Description: Haut-parleurs (Plantronics GameCom 780)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: USB\VID_047F&PID_C010&REV_0100&MI_00
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: PLTGC.sys
Driver Version: 7.00.0008.2157 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 11/5/2011 01:47:58, 1327104 bytes
Other Files:
Driver Provider: C-Media Inc.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: SPDIF Interface (TX0) (VIA High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_1106&DEV_0441&SUBSYS_1458A014&REV_1001
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: viahduaa.sys
Driver Version: 6.00.0001.10200 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/10/2012 15:09:44, 2184816 bytes
Other Files:
Driver Provider: VIA Technologies, Inc.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: SPDIF Interface (TX1) (VIA High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_1106&DEV_0441&SUBSYS_1458A014&REV_1001
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: viahduaa.sys
Driver Version: 6.00.0001.10200 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/10/2012 15:09:44, 2184816 bytes
Other Files:
Driver Provider: VIA Technologies, Inc.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: T27B300-1 (NVIDIA High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10DE&DEV_0016&SUBSYS_10DE0101&REV_1001
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: nvhda64v.sys
Driver Version: 1.03.0016.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 4/18/2012 18:08:03, 188736 bytes
Other Files:
Driver Provider: NVIDIA Corporation
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

Description: Haut-parleurs (VIA High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_1106&DEV_0441&SUBSYS_1458A014&REV_1001
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: viahduaa.sys
Driver Version: 6.00.0001.10200 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/10/2012 15:09:44, 2184816 bytes
Other Files:
Driver Provider: VIA Technologies, Inc.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

---------------------
Sound Capture Devices
---------------------
Description: Microphone (Plantronics GameCom 780)
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: PLTGC.sys
Driver Version: 7.00.0008.2157 (English)
Driver Attributes: Final Retail
Date and Size: 11/5/2011 01:47:58, 1327104 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF

Description: Microphone (VIA High Definition Audio)
Default Sound Capture: No
Default Voice Capture: No
Driver Name: viahduaa.sys
Driver Version: 6.00.0001.10200 (English)
Driver Attributes: Final Retail
Date and Size: 1/10/2012 15:09:44, 2184816 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF



voila pour la partie audio et ma config :
------------------
System Information
------------------
Time of this report: 1/24/2013, 21:16:02
Machine name: KENNY-PC
Operating System: Windows 7 Édition Familiale Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120830-0333)
Language: French (Regional Setting: French)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: To be filled by O.E.M.
BIOS: BIOS Date: 02/21/12 15:12:36 Ver: 04.06.05
Processor: Intel(R) Core(TM) i5-3570 CPU @ 3.40GHz (4 CPUs), ~3.8GHz
Memory: 8192MB RAM
Available OS Memory: 8154MB RAM
Page File: 4806MB used, 11500MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Sound Tab 4: No problems found.
Sound Tab 5: No problems found.
Input Tab: No problems found.




j'espere vous avoir tout fournis ce dont vous avez besoin , merci d'avance de votre aide .