Ordinateur s'eteint seul, processus : virus ?

Bonjour,
Mon ordinateur s'eteint souvent seul apres quelques dizaines de minutes en mettant d'abord un petit ecran bleu, je n'ai jamais le temps de voir ce qui est ecrit.

Je viens d'utiliser Hijackthis pour verifier si je n'ai pas de virus cacher dans des processus.
Y'a t-il donc un virus du type igfxpers/tray, svchost.exe ou autre car je les retrouve dans la liste des processus, sinon quel pourrais-etre la cause de mon probleme, voila le resultat :

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 12:40:19, on 26/09/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsFileAgent.exe
C:\WINDOWS\system32\agrsmsvc.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\Common Files\G Data\AVKProxy\AVKProxy.exe
C:\Program Files\G Data\InternetSecurity\AVK\AVKService.exe
C:\Program Files\G Data\InternetSecurity\AVK\AVKWCtl.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Common Files\LightScribe\LSSrvc.exe
C:\Program Files\Common Files\Nero\Nero BackItUp 4\NBService.exe
C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsDeviceConnect.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Western Digital\WD SmartWare\WD Drive Manager\WDDMService.exe
C:\Program Files\Western Digital\WD SmartWare\Front Parlor\WDFME\WDFME.exe
C:\Program Files\Western Digital\WD SmartWare\Front Parlor\WDSC.exe
C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe
C:\Program Files\Canon\CAL\CALMAIN.exe
C:\Program Files\Common Files\G Data\GDScan\GDScan.exe
C:\Program Files\G Data\InternetSecurity\Firewall\GDFwSvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Analog Devices\Core\smax4pnp.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxsrvc.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Vimicro Corporation\VMUVC\VMonitor.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Adobe\Acrobat 9.0\Acrobat\Acrotray.exe
C:\Program Files\Hewlett-Packard\Shared\hpqwmiex.exe
C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\Com4QLBEx.exe
C:\Program Files\Common Files\Java\Java Update\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\G Data\InternetSecurity\AVKTray\AVKTray.exe
C:\Program Files\G Data\InternetSecurity\Firewall\GDFirewallTray.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Internet Download Manager\IDMan.exe
C:\Program Files\Internet Download Manager\IEMonitor.exe
C:\Program Files\uTorrent\uTorrent.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Documents and Settings\Bergossi\Local Settings\Application Data\Google\Update\GoogleUpdate.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.exe
C:\Program Files\OvisLink\Evo-W542USB\UI.exe
C:\Program Files\PIXELA\ImageMixer 3 SE Ver.4\Transfer Utility\CameraMonitor.exe
C:\Program Files\Western Digital\WD SmartWare\WD Drive Manager\WDDMStatus.exe
C:\Program Files\Microsoft Office\Office12\ONENOTEM.EXE
C:\PROGRA~1\WIDCOMM\BLUETO~1\BTSTAC~1.EXE
C:\Program Files\Skype\Plugin Manager\skypePM.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Skype\Toolbars\Shared\SkypeNames2.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://animalcrossingww.aforumfree.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R3 - URLSearchHook: (no name) - {00000000-6E41-4FD3-8538-502F5495E5FC} - (no file)
O2 - BHO: IDM Helper - {0055C089-8582-441B-A0BF-17B458C2A3A8} - C:\Program Files\Internet Download Manager\IDMIECC.dll
O2 - BHO: G Data WebFilter Class - {0124123D-61B4-456f-AF86-78C53A0790C5} - C:\Program Files\G Data\InternetSecurity\WebFilter\AvkWebIE.dll
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Adobe PDF Conversion Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O2 - BHO: Ask Toolbar BHO - {D4027C7F-154A-4066-A1AD-4243D8127440} - (no file)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: SmartSelect - {F4971EE7-DAA0-4053-9964-665D8EE6A077} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Program Files\Yahoo!\Companion\Installs\cpn\YTSingleInstance.dll
O3 - Toolbar: (no name) - {D4027C7F-154A-4066-A1AD-4243D8127440} - (no file)
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: G Data WebFilter - {0124123D-61B4-456f-AF86-78C53A0790C5} - C:\Program Files\G Data\InternetSecurity\WebFilter\AvkWebIE.dll
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Program Files\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [SoundMAX] C:\Program Files\Analog Devices\SoundMAX\Smax4.exe /tray
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [QlbCtrl.exe] C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe /Start
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [VMonitorVMUVC] "C:\Program Files\Vimicro Corporation\VMUVC\VMonitor.exe" VMUVC
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [Adobe Acrobat Speed Launcher] "C:\Program Files\Adobe\Acrobat 9.0\Acrobat\Acrobat_sl.exe"
O4 - HKLM\..\Run: [Acrobat Assistant 8.0] "C:\Program Files\Adobe\Acrobat 9.0\Acrobat\Acrotray.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [G Data AntiVirus Tray Application] C:\Program Files\G Data\InternetSecurity\AVKTray\AVKTray.exe
O4 - HKLM\..\Run: [GDFirewallTray] C:\Program Files\G Data\InternetSecurity\Firewall\GDFirewallTray.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [IDMan] C:\Program Files\Internet Download Manager\IDMan.exe /onboot
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [Google Update] "C:\Documents and Settings\Bergossi\Local Settings\Application Data\Google\Update\GoogleUpdate.exe" /c
O4 - HKUS\S-1-5-18\..\Run: [DWQueuedReporting] "C:\PROGRA~1\COMMON~1\MICROS~1\DW\dwtrig20.exe" -t (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [DWQueuedReporting] "C:\PROGRA~1\COMMON~1\MICROS~1\DW\dwtrig20.exe" -t (User 'Default user')
O4 - Startup: OneNote 2007 - Capture d'écran et lancement.lnk = C:\Program Files\Microsoft Office\Office12\ONENOTEM.EXE
O4 - Global Startup: Bluetooth.lnk = ?
O4 - Global Startup: ImageMixer 3 SE Camera Monitor Ver.4.lnk = ?
O4 - Global Startup: WDDMStatus.lnk = C:\Program Files\Western Digital\WD SmartWare\WD Drive Manager\WDDMStatus.exe
O8 - Extra context menu item: Ajouter la cible du lien à un fichier PDF existant - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Ajouter à un fichier PDF existant - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convertir au format Adobe PDF - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convertir la cible du lien au format Adobe PDF - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Send to &Bluetooth Device... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O8 - Extra context menu item: Télécharger avec IDM - C:\Program Files\Internet Download Manager\IEExt.htm
O8 - Extra context menu item: Télécharger le contenu de video FLV avec IDM - C:\Program Files\Internet Download Manager\IEGetVL.htm
O8 - Extra context menu item: Télécharger tous les liens avec IDM - C:\Program Files\Internet Download Manager\IEGetAll.htm
O9 - Extra button: Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-12650 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.exe.imgfarm.com/images/nocache/funwebproducts/ei-4/WebfettiInitialSetup1.0.1.1.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Adobe Active File Monitor (AdobeActiveFileMonitor) - Unknown owner - C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsFileAgent.exe
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\WINDOWS\system32\agrsmsvc.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Microsoft ASPI Manager (aspimgr) - Unknown owner - C:\WINDOWS\system32\aspimgr.exe (file missing)
O23 - Service: G Data AntiVirus Proxy (AVKProxy) - Unknown owner - C:\Program Files\Common Files\G Data\AVKProxy\AVKProxy.exe
O23 - Service: Planificateur G Data (AVKService) - Unknown owner - C:\Program Files\G Data\InternetSecurity\AVK\AVKService.exe
O23 - Service: G Data Filesystem Monitor (AVKWCtl) - G Data Software AG - C:\Program Files\G Data\InternetSecurity\AVK\AVKWCtl.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: Canon Camera Access Library 8 (CCALib8) - Canon Inc. - C:\Program Files\Canon\CAL\CALMAIN.exe
O23 - Service: Com4QLBEx - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\Com4QLBEx.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: G Data Personal Firewall (GDFwSvc) - G Data Software AG - C:\Program Files\G Data\InternetSecurity\Firewall\GDFwSvc.exe
O23 - Service: G Data Scanner (GDScan) - G Data Software AG - C:\Program Files\Common Files\G Data\GDScan\GDScan.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: Nero BackItUp Scheduler 4.0 - Nero AG - C:\Program Files\Common Files\Nero\Nero BackItUp 4\NBService.exe
O23 - Service: Photoshop Elements Device Connect (PhotoshopElementsDeviceConnect) - Unknown owner - C:\Program Files\Adobe\Photoshop Elements 3.0\PhotoshopElementsDeviceConnect.exe
O23 - Service: ServiceLayer - Nokia - C:\Program Files\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: WDDMService - WDC - C:\Program Files\Western Digital\WD SmartWare\WD Drive Manager\WDDMService.exe
O23 - Service: WD File Management Engine (WDFME) - Unknown owner - C:\Program Files\Western Digital\WD SmartWare\Front Parlor\WDFME\WDFME.exe
O23 - Service: WD File Management Shadow Engine (WDSC) - Unknown owner - C:\Program Files\Western Digital\WD SmartWare\Front Parlor\WDSC.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - RealVNC Ltd. - C:\Program Files\RealVNC\VNC4\WinVNC4.exe
O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe

End of file - 16097 bytes


--
GEO1997