Impossible d'effacer about:blank

bonjour à tous,

Il m'est impossible d'effacer about:blank, j'ai demarrer en mode sans échect fait toutes les tentatives possible, mais il revient toujours comment m'en débarrasser une fois pour toute.
voici mon hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 10:22:12, on 08/04/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\AVPersonal\AVGUARD.EXE
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\WINDOWS\system32\inetsrv\inetinfo.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\d3eh.exe
C:\WINDOWS\system32\RunDll32.exe
C:\Program Files\AVPersonal\AVGNT.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\addxe32.exe
C:\Program Files\Soft4Ever\looknstop\looknstop.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\lclock.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
C:\Program Files\InterMute\SpySubtract\SpySub.exe
C:\Program Files\Zone Labs\ZoneAlarm\zonealarm.exe
C:\DOCUME~1\lefief\LOCALS~1\Temp\Rar$EX00.375\HijackThis.exe
C:\Program Files\WinRAR\WinRAR.exe
C:\DOCUME~1\lefief\LOCALS~1\Temp\Rar$EX00.641\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\psxse.dll/sp.html#44768
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\psxse.dll/sp.html#44768
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.numericable.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = res://C:\WINDOWS\psxse.dll/sp.html#44768
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\psxse.dll/sp.html#44768
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\psxse.dll/sp.html#44768
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\psxse.dll/sp.html#44768
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\psxse.dll/sp.html#44768
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer fourni par NUMERICABLE
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = ;<local>
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - Default URLSearchHook is missing
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {8BE2C1A5-A5C1-8202-74CD-C68F8F4E10B0} - C:\WINDOWS\system32\msqt32.dll
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [AVGCtrl] "C:\Program Files\AVPersonal\AVGNT.EXE" /min
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [iexplore.exe] C:\Program Files\Internet Explorer\iexplore.exe
O4 - HKLM\..\Run: [addxe32.exe] C:\WINDOWS\system32\addxe32.exe
O4 - HKLM\..\Run: [Look 'n' Stop] "C:\Program Files\Soft4Ever\looknstop\looknstop.exe" -auto
O4 - HKLM\..\RunOnce: [d3eh.exe] C:\WINDOWS\d3eh.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [LClock] lclock.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Spyware Vanisher] C:\spywarevanisher-free\FreeScanner.exe -FastScan
O4 - Global Startup: InterVideo WinCinema Manager.lnk = C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: SpySubtract.lnk = C:\Program Files\InterMute\SpySubtract\SpySub.exe
O4 - Global Startup: ZoneAlarm.lnk = C:\Program Files\Zone Labs\ZoneAlarm\zonealarm.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Convertir les liens sélectionnés en fichier Adobe PDF - res://C:\Program Files\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
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=http:\\www.numericable.fr
O16 - DPF: {22A88341-AFCB-45F0-A856-C2BAE74F878E} (InstallX Class) - http://www.20x2p.com/1e6290b5/enter.cab
O23 - Service: Remote Procedure Call (RPC) Helper ( 11Fßä#·ºÄÖ`I) - Unknown owner - C:\WINDOWS\system32\javahk.exe" /s (file missing)
O23 - Service: AntiVir Service (AntiVirService) - H+BEDV Datentechnik GmbH - C:\Program Files\AVPersonal\AVGUARD.EXE
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Program Files\AVPersonal\AVWUPSRV.EXE
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs Inc. - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

je vous en remercie d'avance