Bureau + barre des tâches disparaissent

Bonjour,
Suite au téléchargement de thèmes pour Google Chrome, je me suis retrouvé au prise avec plusieurs virus. J'ai utilisé The Cleaner et AVG pour m'en débarasser, mais, même si j'ai réussi à en éliminer plusieurs, j'ai encore des problèmes. Entre autres, les icônes de mon bureau ou ma barre des tâches disparaissent (mais jamais en même temps). De plus, bien que je crois que le problème est réglé, il arrivait que mes fenêtres de Word se ferment toutes seules. Pourriez-vous m'aider?

Merci beaucoup!

Rapport Hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16:44:34, on 2009-10-18
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\ibmpmsvc.exe
C:\windows\system32\Ati2evxx.exe
C:\windows\system32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\system32\Ati2evxx.exe
C:\windows\system32\spoolsv.exe
C:\windows\system32\IPSSVC.EXE
C:\Program Files\ThinkPad\ConnectUtilities\AcPrfMgrSvc.exe
C:\WINDOWS\system32\acs.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\ThinkPad\Bluetooth Software\bin\btwdins.exe
C:\Program Files\Diskeeper Corporation\Diskeeper\DkService.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\Program Files\Common Files\Motive\McciCMService.exe
C:\PROGRA~1\AVG\AVG8\avgnsx.exe
C:\Program Files\Network Associates\VirusScan\Mcshield.exe
C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\windows\system32\PnkBstrA.exe
C:\windows\system32\svchost.exe
c:\program files\lenovo\system update\suservice.exe
C:\Program Files\Fichiers communs\Lenovo\tvt_reg_monitor_svc.exe
C:\windows\System32\TPHDEXLG.EXE
C:\WINDOWS\system32\TpKmpSVC.exe
C:\Program Files\Lenovo\Rescue and Recovery\rrservice.exe
C:\Program Files\Fichiers communs\Lenovo\Scheduler\tvtsched.exe
C:\Program Files\Lenovo\Rescue and Recovery\ADM\IUService.exe
C:\windows\system32\usbctl.exe
c:\windows\system32\ZuneBusEnum.exe
C:\Program Files\Fichiers communs\Lenovo\Logger\logmon.exe
C:\Program Files\ThinkPad\ConnectUtilities\AcSvc.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Program Files\ThinkPad\ConnectUtilities\SvcGuiHlpr.exe
C:\windows\Explorer.EXE
C:\windows\system32\ctfmon.exe
C:\windows\system32\rundll32.exe
C:\Program Files\Diskeeper Corporation\Diskeeper\DkIcon.exe
C:\windows\explorer.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.commencez.sympatico.ca/welcome.htm
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 = 127.0.0.1
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: AVG Security Toolbar BHO - {A3BC75A2-1F87-4686-AA43-5347D756017C} - C:\Program Files\AVG\AVG8\Toolbar\IEToolbar.dll
R3 - URLSearchHook: (no name) - *{CFBFAE00-17A6-11D0-99CB-00C04FD64497} - (no file)
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: (no name) - {51A0DD4B-8A41-4C8C-BDDE-974BC436DBAA} - C:\windows\system32\mlljj.dll (file missing)
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\System32\DLA\DLASHX_W.DLL
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: AVG Security Toolbar BHO - {A3BC75A2-1F87-4686-AA43-5347D756017C} - C:\Program Files\AVG\AVG8\Toolbar\IEToolbar.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.3.4501.1418\swg.dll
O2 - BHO: Google Dictionary Compression sdch - {C84D72FE-E17D-4195-BB24-76C02E2E7C4E} - C:\Program Files\Google\Google Toolbar\Component\fastsearch_B7C5AC242193BB3E.dll
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: ThinkVantage Password Manager - {F040E541-A427-4CF7-85D8-75E3E0F476C5} - C:\Program Files\Lenovo\Client Security Solution\tvtpwm_ie_com.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O3 - Toolbar: AVG Security Toolbar - {CCC7A320-B3CA-4199-B1A6-9F516DD69829} - C:\Program Files\AVG\AVG8\Toolbar\IEToolbar.dll
O4 - HKLM\..\Run: [PWRMGRTR] rundll32 C:\PROGRA~1\ThinkPad\UTILIT~1\PWRMGRTR.DLL,PwrMgrBkGndMonitor
O4 - HKLM\..\Run: [BLOG] rundll32 C:\PROGRA~1\ThinkPad\UTILIT~1\BatLogEx.DLL,StartBattLog
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [EZEJMNAP] C:\PROGRA~1\ThinkPad\UTILIT~1\EzEjMnAp.Exe
O4 - HKLM\..\Run: [TPKMAPHELPER] C:\Program Files\ThinkPad\Utilities\TpKmapAp.exe -helper
O4 - HKLM\..\Run: [TpShocks] TpShocks.exe
O4 - HKLM\..\Run: [TPHOTKEY] C:\PROGRA~1\Lenovo\PkgMgr\HOTKEY\TPHKMGR.exe
O4 - HKLM\..\Run: [TP4EX] tp4ex.exe
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: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\CLIStart.exe"
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [LPManager] C:\PROGRA~1\THINKV~2\PrdCtr\LPMGR.exe
O4 - HKLM\..\Run: [AMSG] C:\Program Files\ThinkVantage\AMSG\Amsg.exe
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\FICHIE~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Fichiers communs\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [AwaySch] C:\Program Files\Lenovo\AwayTask\AwaySch.EXE
O4 - HKLM\..\Run: [TVT Scheduler Proxy] C:\Program Files\Fichiers communs\Lenovo\Scheduler\scheduler_proxy.exe
O4 - HKLM\..\Run: [DiskeeperSystray] "C:\Program Files\Diskeeper Corporation\Diskeeper\DkIcon.exe"
O4 - HKLM\..\Run: [ACWLIcon] C:\Program Files\ThinkPad\ConnectUtilities\ACWLIcon.exe
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [PDService.exe] "C:\Program Files\Lenovo\SafeGuard PrivateDisk\pdservice.exe"
O4 - HKLM\..\Run: [cssauth] "C:\Program Files\Lenovo\Client Security Solution\cssauth.exe" silent
O4 - HKLM\..\Run: [ShStatEXE] "C:\Program Files\Network Associates\VirusScan\SHSTAT.EXE" /STANDALONE
O4 - HKLM\..\Run: [McAfeeUpdaterUI] "C:\Program Files\Network Associates\Common Framework\UpdaterUI.exe" /StartedFromRunKey
O4 - HKLM\..\Run: [Network Associates Error Reporting Service] "C:\Program Files\Fichiers communs\Network Associates\TalkBack\TBMon.exe"
O4 - HKLM\..\Run: [BellCanada_McciTrayApp] C:\Program Files\BellCanada\McciTrayApp.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Zune Launcher] "c:\Program Files\Zune\ZuneLauncher.exe"
O4 - HKLM\..\Run: [Fquwi] rundll32.exe "C:\windows\otuhedilawetida.dll",Startup
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\windows\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] "C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [Router] C:\Program Files\Router\Router.exe
O4 - HKCU\..\Run: [kernel] C:\Program Files\kernel\kernel.exe
O4 - HKCU\..\Run: [Google Update] "C:\Documents and Settings\Simon Grondin\Local Settings\Application Data\Google\Update\GoogleUpdate.exe" /c
O4 - HKCU\..\Run: [AdobeUpdater6] "C:\Program Files\Fichiers communs\Adobe\Updater6\Adobe_Updater.exe"
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [FlashPlayerUpdate] C:\windows\system32\Macromed\Flash\FlashUtil9e.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [FlashPlayerUpdate] C:\windows\system32\Macromed\Flash\FlashUtil9e.exe (User 'Default user')
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: Digital Line Detect.lnk = ?
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Envoyer au périphérique &Bluetooth... - C:\Program Files\ThinkPad\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {0045D4BC-5189-4b67-969C-83BB1906C421} - C:\Program Files\Lenovo\Client Security Solution\tvtpwm_ie_com.dll
O9 - Extra 'Tools' menuitem: ThinkVantage Password Manager... - {0045D4BC-5189-4b67-969C-83BB1906C421} - C:\Program Files\Lenovo\Client Security Solution\tvtpwm_ie_com.dll
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: System Update - {DA320635-F48C-4613-8325-D75A933C549E} - C:\Program Files\Lenovo\System Update\sulauncher.exe
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
O14 - IERESET.INF: START_PAGE_URL=https://www.lenovo.com/fr/fr/
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {69EF49E5-FE46-4B92-B5FA-2193AB7A6B8A} (GameLauncher Control) - http://www.acclaim.com/cabs/acclaim_v5.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/...
O16 - DPF: {CF40ACC5-E1BB-4AFF-AC72-04C2F616BCA7} (get_atlcom Class) - http://wwwimages.adobe.com/www.adobe.com/products/acrobat/nos/gp.cab
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O20 - Winlogon Notify: ACNotify - ACNotify.dll (file missing)
O20 - Winlogon Notify: avgrsstarter - C:\windows\SYSTEM32\avgrsstx.dll
O20 - Winlogon Notify: AwayNotify - C:\Program Files\Lenovo\AwayTask\AwayNotify.dll
O20 - Winlogon Notify: cbxvsqo - cbxvsqo.dll (file missing)
O23 - Service: Ac Profile Manager Service (AcPrfMgrSvc) - Unknown owner - C:\Program Files\ThinkPad\ConnectUtilities\AcPrfMgrSvc.exe
O23 - Service: Atheros Configuration Service (acs) - Atheros - C:\WINDOWS\system32\acs.exe
O23 - Service: Access Connections Main Service (AcSvc) - Lenovo - C:\Program Files\ThinkPad\ConnectUtilities\AcSvc.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\windows\system32\Ati2evxx.exe
O23 - Service: AVG Free8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.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\ThinkPad\Bluetooth Software\bin\btwdins.exe
O23 - Service: Command Service (cmdService) - Unknown owner - C:\windows\U2ltb24gR3JvbmRpbg\command.exe (file missing)
O23 - Service: Diskeeper - Diskeeper Corporation - C:\Program Files\Diskeeper Corporation\Diskeeper\DkService.exe
O23 - Service: DomainService - Unknown owner - C:\windows\system32\eqqefmoi.exe (file missing)
O23 - Service: getPlus(R) Helper - NOS Microsystems Ltd. - C:\Program Files\NOS\bin\getPlus_HelperSvc.exe
O23 - Service: GoogleDesktopManager - Google - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: ThinkPad PM Service (IBMPMSVC) - Unknown owner - C:\windows\system32\ibmpmsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\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: Service de base IPS (IPSSVC) - Lenovo Group Limited - C:\windows\system32\IPSSVC.EXE
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: Service Framework McAfee (McAfeeFramework) - McAfee, Inc. - C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
O23 - Service: McciCMService - Motive Communications, Inc. - C:\Program Files\Common Files\Motive\McciCMService.exe
O23 - Service: Network Associates McShield (McShield) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\Mcshield.exe
O23 - Service: Network Associates Task Manager (McTaskManager) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
O23 - Service: Network Monitor - Unknown owner - C:\Program Files\Network Monitor\netmon.exe (file missing)
O23 - Service: PnkBstrA - Unknown owner - C:\windows\system32\PnkBstrA.exe
O23 - Service: IBM PSA Access Driver Control (PsaSrv) - Unknown owner - C:\WINDOWS\system32\PsaSrv.exe
O23 - Service: System Update (SUService) - - c:\program files\lenovo\system update\suservice.exe
O23 - Service: ThinkVantage Registry Monitor Service - Unknown owner - C:\Program Files\Fichiers communs\Lenovo\tvt_reg_monitor_svc.exe
O23 - Service: ThinkPad HDD APS Logging Service (TPHDEXLGSVC) - Lenovo. - C:\windows\System32\TPHDEXLG.EXE
O23 - Service: IBM KCU Service (TpKmpSVC) - Unknown owner - C:\WINDOWS\system32\TpKmpSVC.exe
O23 - Service: TSS Core Service (TSSCoreService) - IBM - C:\Program Files\Lenovo\Client Security Solution\tvttcsd.exe
O23 - Service: TVT Backup Service - Lenovo Group Limited - C:\Program Files\Lenovo\Rescue and Recovery\rrservice.exe
O23 - Service: TVT Scheduler - Lenovo Group Limited - C:\Program Files\Fichiers communs\Lenovo\Scheduler\tvtsched.exe
O23 - Service: tvtnetwk - Unknown owner - C:\Program Files\Lenovo\Rescue and Recovery\ADM\IUService.exe
O23 - Service: Microsoft USB Bus Controller (usbctl) - Unknown owner - C:\windows\system32\usbctl.exe