bonjours!
voila jai viré norton antivirus de mon pc et jai installé avast!4 sur mon pc et lors de son lancement il me dit que "c:\windows\system32\userinit.exe" est infecté par le virus "Win32:Trojan-gen".
 
avast ne peux pas reparer et je ne pense pas pouvoir effacer ce fichier car dapres la base de donnée de microsoft c'est un des fichier clé du OS...
 
qq peux il me dire que faire svp?
 
voici le log de hijackthis si ca peut etre utile:
 
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.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:\Programmes\TuneUp 2004\WinStylerThemeSvc.exe
C:\WINDOWS\System32\svchost.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:\PROGRA~1\AVAST4~1\ashDisp.exe
C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Fichiers communs\EPSON\EBAPI\eEBSVC.exe
C:\Program Files\Avast 4\aswUpdSv.exe
C:\Program Files\Avast 4\ashServ.exe
C:\Program Files\Fichiers communs\EPSON\EBAPI\eEBAgent.exe
C:\Program Files\Fichiers communs\EPSON\EBAPI\SAgent2.exe
C:\WINDOWS\System32\E_S00RP2.EXE
C:\Program Files\Norton AntiVirus\AdvTools\NPROTECT.EXE
C:\WINDOWS\System32\oodag.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\wdfmgr.exe
C:\Program Files\Avast 4\ashWebSv.exe
C:\Program Files\Avast 4\ashMaiSv.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\PROGRA~1\WINZIP\winzip32.exe
C:\WINDOWS\Temp\HijackThis.exe
 
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.hrvg.tk
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =  
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =  
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Internet Explorer by Tibs
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
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) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Programmes\Spybot\SDHelper.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll (file missing)
O2 - BHO: FlashFXP Helper for Internet Explorer - {E5A1691B-D188-4419-AD02-90002030B8EE} - C:\Programmes\FlashFXP\IEFlash.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll (file missing)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [explorer] C:\WINDOWS\explorer.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\AVAST4~1\ashDisp.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [STYLEXP] C:\Program Files\TGTSoft\StyleXP\StyleXP.exe -Hide
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Open In &New Window - C:\Documents and Settings\Thibault\Application Data\TuneUp Software\TuneUp Utilities\Web\tuofinw.tui
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/bina [...] b28578.cab
O16 - DPF: {2A32B14F-4D29-4EA3-AC54-E9B19F436CE7} - http://www.windowsecurity.com/trojanscan/TDECntrl.CAB
O16 - DPF: {31B7EB4E-8B4B-11D1-A789-00A0CC6651A8} - http://www.cult3d.com/download/cult.cab
O16 - DPF: {39B0684F-D7BF-4743-B050-FDC3F48F7E3B} (FilePlanet Download Control Class) - http://www.fileplanet.com/fpdlmgr/ [...] 0_0_44.cab
O16 - DPF: {45E83043-1F6F-4D22-A5E7-0138EA171B49} (FileSharingCtrl Class) - http://appdirectory.messenger.msn. [...] ngctrl.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft. [...] 2047716994
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/bina [...] b28578.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/ [...] loader.cab
O16 - DPF: {FA3662C3-B8E8-11D6-A667-0010B556D978} (IWinAmpActiveX Class) - http://cdn.digitalcity.com/_media/dalaillama/ampx.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Avast 4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Avast 4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Avast 4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Avast 4\ashWebSv.exe" /service (file missing)
O23 - Service: EpsonBidirectionalAgent - SEIKO EPSON CORPORATION - C:\Program Files\Fichiers communs\EPSON\EBAPI\eEBAgent.exe
O23 - Service: EpsonBidirectionalService - Unknown owner - C:\Program Files\Fichiers communs\EPSON\EBAPI\eEBSVC.exe
O23 - Service: EPSON Printer Status Agent2 (EPSONStatusAgent2) - SEIKO EPSON CORPORATION - C:\Program Files\Fichiers communs\EPSON\EBAPI\SAgent2.exe
O23 - Service: EPSON V3 Service2(02) (EPSON_PM_RPCV2_02) - SEIKO EPSON CORPORATION - C:\WINDOWS\System32\E_S00RP2.EXE
O23 - Service: Norton Unerase Protection (NProtectService) - Symantec Corporation - C:\Program Files\Norton AntiVirus\AdvTools\NPROTECT.EXE
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: O&O Defrag - O&O Software GmbH - C:\WINDOWS\System32\oodag.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\PROGRA~1\FICHIE~1\Sony Shared\AVLib\Sptisrv.exe
O23 - Service: StyleXPService - Unknown owner - C:\Program Files\TGTSoft\StyleXP\StyleXPService.exe (file missing)
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: TuneUp WinStyler Theme Service (TUWinStylerThemeSvc) - TuneUp Software GmbH - C:\Programmes\TuneUp 2004\WinStylerThemeSvc.exe
 
merci bcp en avance

salut
Faite scan en ligne et coller le rapport ici sur le post
utiliser l'antivirus en ligne suivant :  
http://www.ravantivirus.com/scan/  
Cliquer sur "To continue without subscribing click here" et attendre quelques minutes.  
 
Lorsque "Ready" est affiché dans "status", cocher la case "Autoclean" puis cliquer sur "Scan my PC"
<gras>A la fin de l'analyse, copier/coller le rapport ici.</gras>