About:blank .....

J'ai en permance Internet Explorer qui s'ouvre avec about:blank dans la barre url. J'ai utilisé ad-aware personnal, microsoft antispyware et norton antivurs 2005, impossible de virer ça.

voilà ce que hijackthis me donne :

Logfile of HijackThis v1.99.1
Scan saved at 11:49:34, on 16/05/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
C:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\ATKKBService.exe
C:\Program Files\Norton SystemWorks\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton SystemWorks\Norton AntiVirus\IWP\NPFMntor.exe
C:\PROGRA~1\NORTON~1\NORTON~1\NPROTECT.EXE
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\msole32.exe
C:\WINDOWS\System32\shnlog.exe
C:\WINDOWS\popuper.exe
C:\WINDOWS\System32\intmonp.exe
C:\WINDOWS\System32\intmon.exe
C:\Program Files\Microsoft AntiSpyware\gcasServ.exe
C:\Program Files\Microsoft AntiSpyware\gcasDtServ.exe
G:\My Download Files\hijackthis_199\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.startsearches.net/bar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.startsearches.net/search.php?qq=%1
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = http://www.startsearches.net/
O2 - BHO: VMHomepage Class - {FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF} - C:\WINDOWS\System32\hpA2A8.tmp
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [gcasServ] "C:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O23 - Service: ATK Keyboard Service (ATKKeyboardService) - ASUSTeK COMPUTER INC. - C:\WINDOWS\ATKKBService.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - C:\Program Files\Norton SystemWorks\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - C:\Program Files\Norton SystemWorks\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: Norton Unerase Protection (NProtectService) - Symantec Corporation - C:\PROGRA~1\NORTON~1\NORTON~1\NPROTECT.EXE
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe