SOS ordinateur infecté! rapport hijackthis:

Bonjour,
J'ai tout essayé mais rien à faire je ne sais pas quoi faire pour désinfecté mon ordinateur et il devient de plus en plus lent et de moins en moins performant. Voila le rapport Hijackthis!
Vous en pensez quoi??
Merci d'avance!

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 23:49:15, on 29/12/2007
Platform: Windows Vista (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16575)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Windows\system32\taskeng.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\hp\support\hpsysdrv.exe
C:\Program Files\Hewlett-Packard\On-Screen OSD Indicator\OSD.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\IAAnotif.exe
C:\Windows\System32\rundll32.exe
C:\Windows\RtHDVCpl.exe
C:\Program Files\HP\HP Software Update\hpwuSchd2.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Picasa2\PicasaMediaDetector.exe
C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
C:\Windows\System32\wupeng.exe
C:\Program Files\Alwil Software\Avast4\ashDisp.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Users\Ferdaws\AppData\Local\nggefxxqqi.exe
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Windows\ehome\ehmsas.exe
C:\Windows\system32\wbem\unsecapp.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\hp\kbd\kbd.exe
C:\Program Files\Internet Explorer\IEUser.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\Windows\system32\SearchFilterHost.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://fr.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr?cobrand=hp-desktop.msn.com&ocid=HPDHP&pc=HPDTDF
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://home.sweetim.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - {00A6FAF6-072E-44cf-8957-5838F569A31D} - C:\Program Files\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL (file missing)
R3 - URLSearchHook: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll
O1 - Hosts: ::1 localhost
O2 - BHO: MyWebSearch Search Assistant BHO - {00A6FAF1-072E-44cf-8957-5838F569A31D} - C:\Program Files\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL (file missing)
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: mwsBar BHO - {07B18EA1-A523-4961-B6BB-170DE4475CCA} - C:\Program Files\MyWebSearch\bar\1.bin\MWSBAR.DLL
O2 - BHO: SWEETIE - {1A0AADCD-3A72-4b5f-900F-E3BB5A838E2A} - C:\PROGRA~1\MACROG~1\SWEETI~1\toolbar.dll
O2 - BHO: (no name) - {1E8A6170-7264-4D0F-BEAE-D42A53123C75} - c:\Program Files\Common Files\Symantec Shared\coShared\Browser\1.0\NppBho.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (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: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Show Norton Toolbar - {90222687-F593-4738-B738-FBEE9C7B26DF} - c:\Program Files\Common Files\Symantec Shared\coShared\Browser\1.0\UIBHO.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: My Web Search - {07B18EA9-A523-4961-B6BB-170DE4475CCA} - C:\Program Files\MyWebSearch\bar\1.bin\MWSBAR.DLL
O3 - Toolbar: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [hpsysdrv] c:\hp\support\hpsysdrv.exe
O4 - HKLM\..\Run: [KBD] C:\HP\KBD\KbdStub.EXE
O4 - HKLM\..\Run: [OsdMaestro] "C:\Program Files\Hewlett-Packard\On-Screen OSD Indicator\OSD.exe"
O4 - HKLM\..\Run: [IAAnotif] "C:\Program Files\Intel\Intel Matrix Storage Manager\Iaanotif.exe"
O4 - HKLM\..\Run: [NvSvc] RUNDLL32.EXE C:\Windows\system32\nvsvc.dll,nvsvcStart
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\Windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\Windows\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [CCUTRAYICON] FactoryMode
O4 - HKLM\..\Run: [HP Software Update] c:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [ccApp] "c:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [osCheck] "c:\Program Files\Norton Internet Security\osCheck.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [My Web Search Bar Search Scope Monitor] "C:\PROGRA~1\MYWEBS~1\bar\1.bin\m3SrchMn.exe" /m=0
O4 - HKLM\..\Run: [MyWebSearch Email Plugin] C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwsoemon.exe
O4 - HKLM\..\Run: [SweetIM] C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
O4 - HKLM\..\Run: [Winupdate Engine] C:\Windows\system32\wupeng.exe
O4 - HKLM\..\Run: [SpywareTerminator] "C:\Program Files\Spyware Terminator\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [Uninstall_CToolbar] "C:\Windows\Temp\CTun.exe" "/remove"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\RunOnce: [Launcher] %WINDIR%\SMINST\launcher.exe
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [ISUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\isuspm.exe -startup
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Speech Recognition] "C:\Windows\Speech\Common\sapisvr.exe" -SpeechUX -Startup
O4 - HKCU\..\Run: [nggefxxqqi] c:\users\ferdaws\appdata\local\nggefxxqqi.exe nggefxxqqi
O4 - HKCU\..\Run: [SweetIM] C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O4 - Startup: Widget_MTV.lnk = ?
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbaredits/menusearch.jhtml?p=ZNxmk789MXTN
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\Windows\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\Windows\bdoscandel.exe
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O13 - Gopher Prefix:
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.exe.imgfarm.com/images/nocache/funwebproducts/ei-3/SmileyCentralFWBInitialSetup1.0.1.0.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O16 - DPF: {6CCE3920-3183-4B3D-808A-B12EB769DE12} (CSS Web Installer Class) - http://ww11.commandondemand.com/eval/cod/cabs/cssweb.cab
O23 - Service: Intel(R) Alert Service (AlertService) - Intel(R) Corporation - C:\Program Files\Intel\IntelDH\CCU\AlertService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Boonty Games - BOONTY - C:\Program Files\Common Files\BOONTY Shared\Service\Boonty.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe
O23 - Service: Symantec Lic NetConnect service (CLTNetCnService) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccSvcHst.exe
O23 - Service: COM Host (comHost) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\VAScanner\comHost.exe
O23 - Service: DQLWinService - Unknown owner - C:\Program Files\Common Files\Intel\IntelDH\NMS\AdpPlugins\DQLWinService.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\Iaantmon.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - c:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: Intel DH Service (IntelDHSvcConf) - Intel(R) Corporation - C:\Program Files\Intel\IntelDH\Intel Media Server\Tools\IntelDHSvcConf.exe
O23 - Service: Validation de mot de passe Symantec IS (ISPwdSvc) - Symantec Corporation - c:\Program Files\Norton Internet Security\isPwdSvc.exe
O23 - Service: Intel(R) Software Services Manager (ISSM) - Intel(R) Corporation - C:\Program Files\Intel\IntelDH\Intel Media Server\Media Server\bin\ISSM.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - c:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: Intel(R) Viiv(TM) Media Server (M1 Server) - Unknown owner - C:\Program Files\Intel\IntelDH\Intel Media Server\Media Server\bin\mediaserver.exe
O23 - Service: Intel(R) Application Tracker (MCLServiceATL) - Intel(R) Corporation - C:\Program Files\Intel\IntelDH\Intel Media Server\Shells\MCLServiceATL.exe
O23 - Service: My Web Search Service (MyWebSearchService) - Unknown owner - C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwssvc.exe (file missing)
O23 - Service: Planificateur LiveUpdate automatique - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
O23 - Service: Intel(R) Remoting Service (Remote UI Service) - Intel(R) Corporation - C:\Program Files\Intel\IntelDH\Intel Media Server\Shells\Remote UI Service.exe
O23 - Service: RoxMediaDB9 - Sonic Solutions - c:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxMediaDB9.exe
O23 - Service: stllssvr - MicroVision Development, Inc. - c:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: Symantec Core LC - Unknown owner - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: Symantec AppCore Service (SymAppCore) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\AppCore\AppSvc32.exe
O23 - Service: XAudioService - Conexant Systems, Inc. - C:\Windows\system32\DRIVERS\xaudio.exe