Centre de sécurité Vista désactivé

idem pour moi impossible d'ouvrir le centre de securite...impossible de lancer mon antivirus ,et impossible de faire une restauration systeme!!!!!!
fait un scan avechijacktis: voici son rapport merci de votre aide:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 14:42:21, on 19/01/2008
Platform: Windows Vista  (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16575)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\system32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Program Files\Common Files\Acronis\Schedule2\schedhlp.exe
C:\Program Files\Geniatech DVBT Application\Schedule_d.exe
C:\Windows\V0270Mon.exe
C:\Program Files\cFosSpeed\cfosspeed.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\DynDNS Updater\DynDNS.exe
C:\Program Files\DAEMON Tools\daemon.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Dell Support Center\bin\sprtcmd.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Windows\System32\mobsync.exe
C:\Program Files\Hotmail Popper\hotpop.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:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Common Files\Logitech\KhalShared\KHALMNPR.EXE
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Windows\system32\drivers\down\139698.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = htt://fr.msn.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = htt://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: SnagIt Toolbar Loader - {00C6482D-C502-44C8-8409-FCE54AD9C208} - C:\Program Files\TechSmith\SnagIt 8\SnagItBHO.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: NetXfer - {83B80A9C-D91A-4F22-8DCF-EA7204039F79} - C:\Program Files\Xi\NetXfer\NXIEHelper.dll
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: TransactionProtector BHO - {C1656CCA-D2EA-4A32-94AE-AE0B180E6449} - C:\Program Files\Trend Micro\TrendSecure\TransactionProtector\TSToolbar.dll
O3 - Toolbar: SnagIt - {8FF5E183-ABDE-46EB-B09E-D2AAB95CABE3} - C:\Program Files\TechSmith\SnagIt 8\SnagItIEAddin.dll
O3 - Toolbar: Transaction Protector - {E7620C98-FCCC-40E5-92EC-C7685D2E1E40} - C:\Program Files\Trend Micro\TrendSecure\TransactionProtector\TSToolbar.dll
O3 - Toolbar: NetXfer - {C16CBAAC-A75C-4DB5-A0DD-CDF5CAFCDD3A} - C:\Program Files\Xi\NetXfer\NXToolBar.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [StartCCC] C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe
O4 - HKLM\..\Run: [TrueImageMonitor.exe] C:\Program Files\Acronis\TrueImageHome\TrueImageMonitor.exe
O4 - HKLM\..\Run: [AcronisTimounterMonitor] C:\Program Files\Acronis\TrueImageHome\TimounterMonitor.exe
O4 - HKLM\..\Run: [Acronis Scheduler2 Service] "C:\Program Files\Common Files\Acronis\Schedule2\schedhlp.exe"
O4 - HKLM\..\Run: [Schedule_d] "C:\Program Files\Geniatech DVBT Application\Schedule_d.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [V0270Mon.exe] C:\Windows\V0270Mon.exe
O4 - HKLM\..\Run: [dscactivate] "C:\Program Files\Dell Support Center\gs_agent\custom\dsca.exe"
O4 - HKLM\..\Run: [cFosSpeed] C:\Program Files\cFosSpeed\cFosSpeed.exe
O4 - HKLM\..\Run: [Kernel and Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [UfSeAgnt.exe] "C:\Program Files\Trend Micro\Internet Security\UfSeAgnt.exe"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [DynDNS Updater] "C:\Program Files\DynDNS Updater\DynDNS.exe"
O4 - HKCU\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [DellSupportCenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P DellSupportCenter
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: GigaTribe.lnk = C:\Program Files\GigaTribe\gigatribe.exe
O4 - Startup: Hotmail Popper.lnk = C:\Program Files\Hotmail Popper\hotpop.exe
O4 - Global Startup: Logitech SetPoint.lnk = C:\Program Files\Logitech\SetPoint\SetPoint.exe
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: Tout télécharger avec NetXfer - C:\Program Files\Xi\NetXfer\NXAddList.html
O8 - Extra context menu item: Télécharger avec NetXfer - C:\Program Files\Xi\NetXfer\NXAddLink.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - htt://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O22 - SharedTaskScheduler: Windows DreamScene - {E31004D1-A431-41B8-826F-E902F9D95C81} - C:\Windows\System32\DreamScene.dll
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - C:\Program Files\Common Files\Acronis\Schedule2\schedul2.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - C:\Windows\system32\Ati2evxx.exe
O23 - Service: cFosSpeed System Service (cFosSpeedS) - cFos Software GmbH - C:\Program Files\cFosSpeed\spd.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1150\Intel 32\IDriverT.exe
O23 - Service: SupportSoft Sprocket Service (dellsupportcenter) (sprtsvc_dellsupportcenter) - SupportSoft, Inc. - C:\Program Files\Dell Support Center\bin\sprtsvc.exe
O23 - Service: @%SystemRoot%\System32\TuneUpDefragService.exe,-1 (TuneUp.Defrag) - TuneUp Software GmbH - C:\Windows\System32\TuneUpDefragService.exe
O23 - Service: Windows Live Setup Service (WLSetupSvc) - Unknown owner - C:\Program Files\Windows Live\installer\WLSetupSvc.exe

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