Pb demarrage windows kernel32.dll

Bonjour,
j ai voulu desinstaller f secure et le remplacer par avast. et quand je redemarre mom pc il y a un message d erreur dans les fichiers kernel32.dll
voici le rapport hijack
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:28:13, on 21/02/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\System32\WLTRYSVC.EXE
C:\WINDOWS\System32\bcmwltry.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\WINDOWS\stsystra.exe
C:\WINDOWS\system32\WLTRAY.exe
C:\Program Files\Dell\QuickSet\quickset.exe
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\Roxio\Drag-to-Disc\DrgToDsc.exe
C:\Program Files\CyberLink\PowerDVD DX\PDVDDXSrv.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe
C:\Program Files\TalkTalk\bin\sprtcmd.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.EXE
C:\Program Files\Symantec\ACT\ACTLDR.EXE
C:\Program Files\Digital Line Detect\DLG.exe
C:\Program Files\Symantec\ACT\Sideact.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://partnerpage.google.com/smallbiz.dell.com/en_uk?hl=en&client=dell-usuk&channel=uk-smb&ibd=4080126
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.dell.com/en-uk?c=uk&l=en&s=gen&redirect=1
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.dell.com/en-uk?c=uk&l=en&s=gen&redirect=1
R1 - HKLM\Software\Microsoft\Internet Explorer\Search,Default_Page_URL = http://partnerpage.google.com/smallbiz.dell.com/en_uk?hl=en&client=dell-usuk&channel=uk-smb&ibd=4080126
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Browser Address Error Redirector - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - C:\Program Files\Dell\BAE\BAE.dll
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [Broadcom Wireless Manager UI] C:\WINDOWS\system32\WLTRAY.exe
O4 - HKLM\..\Run: [Dell QuickSet] C:\Program Files\Dell\QuickSet\quickset.exe
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\CLIStart.exe"
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [RoxioDragToDisc] "C:\Program Files\Roxio\Drag-to-Disc\DrgToDsc.exe"
O4 - HKLM\..\Run: [PDVDDXSrv] "C:\Program Files\CyberLink\PowerDVD DX\PDVDDXSrv.exe"
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [dscactivate] "C:\Program Files\Dell Support Center\gs_agent\custom\dsca.exe"
O4 - HKLM\..\Run: [F-Secure TNB] "C:\Program Files\TalkTalk Online Security\TNB\TNBUtil.exe" /CHECKALL /WAITFORSW
O4 - HKLM\..\Run: [F-Secure Startup Wizard] "C:\Program Files\TalkTalk Online Security\FSGUI\FSSW.EXE" /reboot
O4 - HKLM\..\Run: [News Service] "C:\Program Files\TalkTalk Online Security\FSGUI\ispnews.exe"
O4 - HKLM\..\Run: [TalkTalk] "C:\Program Files\TalkTalk\bin\sprtcmd.exe" /P TalkTalk
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [RegistryCleanFixMFC] C:\Program Files\RegistryCleanFix2008\RegistryCleaner2008.exe
O4 - Global Startup: ACT! Démarrage Rapide.lnk = C:\Program Files\Symantec\ACT\ACTLDR.EXE
O4 - Global Startup: Digital Line Detect.lnk = C:\Program Files\Digital Line Detect\DLG.exe
O4 - Global Startup: SideACT!.lnk = C:\Program Files\Symantec\ACT\Sideact.exe
O8 - Extra context menu item: &Block this popup - C:\Program Files\TalkTalk Online Security\Anti-Spyware\blockpopups.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: IE Shield - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - C:\Program Files\TalkTalk Online Security\Anti-Spyware\ieshield.dll
O9 - Extra 'Tools' menuitem: IE Shield... - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - C:\Program Files\TalkTalk Online Security\Anti-Spyware\ieshield.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
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
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~2\GOEC62~1.DLL
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\TalkTalk Online Security\FWES\Program\fsdfwd.exe
O23 - Service: GoogleDesktopManager - Google - C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
O23 - Service: McAfee Real-time Scanner (McShield) - Unknown owner - C:\PROGRA~1\McAfee\VIRUSS~1\mcshield.exe (file missing)
O23 - Service: McAfee SystemGuards (McSysmon) - Unknown owner - C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe (file missing)
O23 - Service: stllssvr - MicroVision Development, Inc. - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: Dell Wireless WLAN Tray Service (wltrysvc) - Unknown owner - C:\WINDOWS\System32\WLTRYSVC.EXE