Bonjour tout le monde et merci de consulter ce sujet :-D .
Mon probléme se situe comme le sujet l'indique au niveau du gestionnaire des tâches. En effet celui-ci ne veut pas se lancer mais reste affiché dans la barre des tâches sous la forme d'un icône vert.
Je sais que ce sujet a été posté mainte et mainte fois mais je pensse qu'il s'agit d'un sujet a prendre au cas par cas .
J'ai deja essayer certaines commandes apparues sur ce forum mais cela n'a eu aucun résultat sauf pour la manipulation avec gpedit.msc qui me débloque pendant un court instant mon gestionnaire des tâches.
J'ai notamment effectué une restauration du systéme (sans conséquence) et un scan avec norton ( on-line)
voici le rapport:

C:\WINDOWS\NDNuninstall7_22.exe is infected with Adware.NDotNet
C:\WINDOWS\Temp\temp28622020.exe is infected with W32.Kelvir
C:\WINDOWS\Temp\Altnet\adm.exe is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\adm25.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\adm4.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\admdata.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\admdloader.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\admfdi.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\admprog.dll is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\dmfiles.cab is infected with Adware.Topsearch
C:\WINDOWS\Temp\Altnet\mysearch.cab is infected with Adware.MWSearch
C:\WINDOWS\Temp\Altnet\pmexe.cab is infected with Adware.Topsearch
C:\WINDOWS\Temp\Altnet\pmfiles.cab is infected with Adware.BDE
C:\WINDOWS\Temp\Altnet\Setup.exe is infected with Adware.BDE
C:\WINDOWS\Downloaded Program Files\UERSV_0001_LPNetInstaller.exe is infected with SecurityRisk.Downldr
C:\WINDOWS\Downloaded Program Files\UERSV_0001_LPNetInstaller.exe is infected with ErrorSafe
C:\Program Files\Save\ACM.dll is infected with Adware.Savenow
C:\Program Files\Save\Save.exe is infected with Adware.Savenow
C:\Program Files\Save\SaveUninst.exe is infected with Adware.Savenow
C:\Program Files\Need2Find\bar\3.bin\N2PLUGIN.DLL is infected with Adware.MWSearch
C:\Program Files\Need2Find\bar\3.bin\ND2FNBAR.DLL is infected with Adware.MWSearch
C:\Program Files\Need2Find\bar\3.bin\NPND2FN.DLL is infected with Adware.MWSearch
C:\Program Files\Mozilla Firefox\plugins\NPNd2fn.dll is infected with Adware.MWSearch
C:\Program Files\INSTAFINK\instafink.dll is infected with Adware.InstaFinder
C:\Program Files\Fichiers communs\GMT\EGGCEngine.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\GMT\egIEEngine.dll is infected with Adware.GatorEWallet
C:\Program Files\Fichiers communs\GMT\EGIEProcess.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\GMT\EGNSEngine.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\GMT\GatorRes.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\GMT\GatorRes.dll is infected with Adware.GatorEWallet
C:\Program Files\Fichiers communs\GMT\GatorStubSetup.exe is infected with Adware.GatorEWallet
C:\Program Files\Fichiers communs\GMT\GMT.exe is infected with Adware.GAIN
C:\Program Files\Fichiers communs\GMT\GUninstaller.exe is infected with Adware.GatorEWallet
C:\Program Files\Fichiers communs\CMEII\CMEIIAPI.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\CMEII\CMESys.exe is infected with Adware.GAIN
C:\Program Files\Fichiers communs\CMEII\GAppMgr.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\CMEII\GController.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\CMEII\GMTProxy.dll is infected with Adware.GAIN
C:\Program Files\Fichiers communs\CMEII\GStore.dll is infected with Adware.GAIN
C:\Documents and Settings\Florian\Local Settings\Temp\asmfiles.cab is infected with Adware.Topsearch
C:\Documents and Settings\Florian\Local Settings\Temp\cd_clint.dll is infected with Adware.Cydoor
C:\Documents and Settings\Florian\Local Settings\Temp\P2P Networkingp2pA.EXE is infected with Adware.P2PNetworking
C:\Documents and Settings\Florian\Local Settings\Temp\p2psetup.exe is infected with Adware.P2PNetworking
C:\Documents and Settings\Florian\Local Settings\Temp\__unin__.exe is infected with Adware.Topsearch
C:\Documents and Settings\Florian\Local Settings\Temp\~ErrorSafeScannerSetup.exe is infected with ErrorSafe
C:\Documents and Settings\Florian\Local Settings\Temp\NI.UERSV_0001_LP\setup.exe is infected with ErrorSafe
C:\Documents and Settings\Florian\Local Settings\Temp\FNI.ERSV_0001_F56C0711\setup.exe is infected with ErrorSafe
C:\Documents and Settings\Administrateur\Local Settings\Temp\cd_clint.dll is infected with Adware.Cydoor
C:\Documents and Settings\Administrateur\Local Settings\Temp\__unin__.exe is infected with Adware.Topsearch

Et voici le rapport de hitjackthis:

Logfile of HijackThis v1.99.1
Scan saved at 22:16:35, on 09/03/2006
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2600.0000)

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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\asuskbservice.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Softwin\BitDefender8\bdoesrv.exe
C:\progra~1\softwin\bitdef~1\bdnagent.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\HP\hpcoretech\hpcmpmgr.exe
C:\Program Files\Winamp\winampa.exe
C:\Program Files\Creative\Shared Files\CAMTRAY.EXE
C:\Program Files\Roxio\Easy Media Creator 7\Drag to Disc\DrgToDsc.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\PROGRA~1\Sony\SONICS~1\SsAAD.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\QuickTime\qttask.exe
C:\PROGRA~1\Save\Save.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\HP\Digital Imaging\bin\hpqgalry.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Ventrilo\Ventrilo.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Softwin\BitDefender8\vsserv.exe
c:\progra~1\softwin\bitdef~1\bdmcon.exe
C:\Program Files\Steam\Steam.exe
C:\WINDOWS\System32\taskmgr.exe
C:\WINDOWS\System32\taskmgr.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\Administrateur\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: Need2Find Bar BHO - {4D1C4E81-A32A-416b-BCDB-33B3EF3617D3} - C:\Program Files\Need2Find\bar\3.bin\ND2FNBAR.DLL
O2 - BHO: RXResultTracker Class - {59879FA4-4790-461c-A1CC-4EC4DE4CA483} - C:\Program Files\RXToolBar\sfcont.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [BDMCon] c:\progra~1\softwin\bitdef~1\bdmcon.exe
O4 - HKLM\..\Run: [BDOESRV] C:\Program Files\Softwin\BitDefender8\\bdoesrv.exe
O4 - HKLM\..\Run: [BDNewsAgent] c:\progra~1\softwin\bitdef~1\bdnagent.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [anvshell] anvshell.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [MSUPDATE (critical)] schost.exe
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [WinampAgent] C:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [Creative WebCam Tray] C:\Program Files\Creative\Shared Files\CAMTRAY.EXE
O4 - HKLM\..\Run: [RoxioDragToDisc] "C:\Program Files\Roxio\Easy Media Creator 7\Drag to Disc\DrgToDsc.exe"
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [SsAAD.exe] C:\PROGRA~1\Sony\SONICS~1\SsAAD.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [BearShare] "C:\Program Files\BearShare\BearShare.exe" /pause
O4 - HKLM\..\Run: [SemanticInsight] C:\Program Files\RXToolBar\Semantic Insight\SemanticInsight.exe
O4 - HKLM\..\Run: [WhenUSave] C:\PROGRA~1\Save\Save.exe
O4 - HKLM\..\RunServices: [MSUPDATE (critical)] schost.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - Global Startup: Démarrage rapide du logiciel HP Image Zone.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Logitech Desktop Messenger.lnk = C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LDMConf.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: &Search - http://kt.bar.need2find.com/KT/menusearch.html?p=KT
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: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6 [...] vSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6 [...] /cabsa.cab
O16 - DPF: {B64F4A7C-97C9-11DA-8BDE-F66BAD1E3F3A} - http://fr.errorsafe.com/pages/scan [...] tallFR.cab
O16 - DPF: {F919FBD3-A96B-4679-AF26-F551439BB5FD} - http://fr.errorsafe.com/pages/scan [...] tallFR.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O18 - Filter: text/html - {2AB289AE-4B90-4281-B2AE-1F4BB034B647} - C:\Program Files\RXToolBar\sfcont.dll
O20 - AppInit_DLLs: sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll sockspy.dll
O23 - Service: ASUSKeyboardService - ASUSTeK COMPUTER INC. - C:\WINDOWS\asuskbservice.exe
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Trend Micro Personal Firewall (PccPfw) - Unknown owner - C:\Program Files\Trend Micro\Internet Security\PccPfw.exe (file missing)
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: SonicStage SCSI Service (SSScsiSV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SSScsiSV.exe
O23 - Service: Trend NT Realtime Service (Tmntsrv) - Unknown owner - C:\Program Files\Trend Micro\Internet Security\Tmntsrv.exe (file missing)
O23 - Service: Trend Micro Proxy Service (tmproxy) - Unknown owner - C:\Program Files\Trend Micro\Internet Security\tmproxy.exe (file missing)
O23 - Service: BitDefender Virus Shield (VSSERV) - SOFTWIN S.R.L. - C:\Program Files\Softwin\BitDefender8\vsserv.exe
O23 - Service: BitDefender Communicator (XCOMM) - Softwin - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe

Merci d'avoir eu la patience de lire mon sujet et longue vie a infos-du-net.com