Message d'erreur ssvichosst.exe au démarrage

Bonjour,
Au demarrage de mon PC windows m'affiche un message d'erreur comme quoi il n'arrive pas à trouver le fichier ssvichosst.exe .
J'ai consulté le forum à ce sujet et suivi les instructions mais en vain.
J'ai scanné avec Hijackthis et voici le rapport:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 19:18:02, on 26/12/2007
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
C:\WINDOWS\system32\00THotkey.exe
C:\Program Files\TOSHIBA\Commandes TOSHIBA\TFncKy.exe
C:\WINDOWS\system32\dla\tfswctrl.exe
C:\Program Files\TOSHIBA\TME3\TMERzCtl.EXE
C:\WINDOWS\AGRSMMSG.exe
C:\WINDOWS\system32\TPSMain.exe
C:\Program Files\Apoint2K\Apoint.exe
C:\Program Files\TOSHIBA\TouchED\TouchED.Exe
C:\Program Files\TOSHIBA\Utilitaire de zoom TOSHIBA\SmoothView.exe
C:\Program Files\Corel\Corel Snapfire\Corel Photo Downloader.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\system32\TPSBattM.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Nokia\Nokia PC Suite 6\LaunchApplication.exe
C:\Program Files\cFosSpeed\cFosSpeed.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\MySpace\IM\MySpaceIM.exe
C:\Program Files\Micro Application\12 DICOS Indispensables\MediaDICO12.EXE
C:\Program Files\Micro Application\12 DICOS Indispensables\Rac12.EXE
C:\Program Files\Apoint2K\Apntex.exe
C:\WINDOWS\system32\RAMASST.exe
C:\Program Files\Windows Desktop Search\WindowsSearch.exe
C:\Program Files\La barre LCI\barre_infos_lci.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\Program Files\IVT Corporation\BlueSoleil\BTNtService.exe
C:\Program Files\cFosSpeed\spd.exe
c:\program files\dell printers\Additional Color Laser Software\Status Monitor\DLSDBNT.EXE
C:\WINDOWS\system32\DVDRAMSV.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\svchost.exe
C:\Program Files\TOSHIBA\TME3\Tmesrv31.exe
C:\Program Files\TOSHIBA\TME3\TMEEJME.EXE
c:\program files\dell printers\Additional Color Laser Software\Status Monitor\DLPWDNT.EXE
C:\WINDOWS\system32\SearchIndexer.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\system32\SearchProtocolHost.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\PC Connectivity Solution\ServiceLayer.exe
C:\Program Files\MySpace\IM\MySpaceIM.exe
C:\Program Files\Skype\Plugin Manager\SkypePM.exe
C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleil.exe
C:\Program Files\Copernic Agent\CopernicAgent.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\Program Files\Copernic Agent\CopernicAgentExt.rdl/INTEGRATION_BAND_SEARCHBAR_HTML
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://fr.yahoo.com/?p=us
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ie/defaults/sb/msgr8/*http://www.yahoo.com/ext/search/search.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://home.sweetim.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://us.rd.yahoo.com/customize/ie/defaults/su/msgr8/*https://fr.yahoo.com/?p=us
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - {BE89472C-B803-4D1D-9A9A-0A63660E0FE3} - C:\PROGRA~1\COPERN~1\COPERN~1.DLL
R3 - URLSearchHook: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll
F2 - REG:system.ini: Shell=Explorer.exe SSVICHOSST.exe
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SWEETIE - {1A0AADCD-3A72-4b5f-900F-E3BB5A838E2A} - C:\PROGRA~1\MACROG~1\SWEETI~1\toolbar.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: Need2Find Bar BHO - {4D1C4E81-A32A-416b-BCDB-33B3EF3617D3} - C:\Program Files\Need2Find\bar\1.bin\ND2FNBAR.DLL (file missing)
O2 - BHO: RXResultTracker Class - {59879FA4-4790-461c-A1CC-4EC4DE4CA483} - C:\Program Files\RXToolBar\sfcont.dll (file missing)
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: (no name) - {7111CFC3-EB6B-420C-A45E-E5375A69F19A} - C:\WINDOWS\system32\vtsts.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: (no name) - {ED203331-9C33-49D8-8714-D24A366A04EC} - C:\WINDOWS\system32\xxyvvur.dll (file missing)
O3 - Toolbar: Copernic Agent - {F2E259E8-0FC8-438C-A6E0-342DD80FA53E} - C:\PROGRA~1\COPERN~1\COPERN~1.DLL
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [00THotkey] C:\WINDOWS\system32\00THotkey.exe
O4 - HKLM\..\Run: [000StTHK] 000StTHK.exe
O4 - HKLM\..\Run: [TFncKy] TFncKy.exe
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O4 - HKLM\..\Run: [TMESRV.EXE] C:\Program Files\TOSHIBA\TME3\TMESRV31.EXE /Logon
O4 - HKLM\..\Run: [TMERzCtl.EXE] C:\Program Files\TOSHIBA\TME3\TMERzCtl.EXE /Service
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [TPSMain] TPSMain.exe
O4 - HKLM\..\Run: [TPSODDCtl] TPSODDCtl.exe
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [TouchED] C:\Program Files\TOSHIBA\TouchED\TouchED.Exe
O4 - HKLM\..\Run: [SmoothView] C:\Program Files\TOSHIBA\Utilitaire de zoom TOSHIBA\SmoothView.exe
O4 - HKLM\..\Run: [SemanticInsight] C:\Program Files\RXToolBar\Semantic Insight\SemanticInsight.exe
O4 - HKLM\..\Run: [DLPSP] "c:\program files\dell printers\Additional Color Laser Software\Status Monitor\DLPSP.EXE"
O4 - HKLM\..\Run: [Corel Photo Downloader] C:\Program Files\Corel\Corel Snapfire\Corel Photo Downloader.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [CnxTrApp] rundll32.exe "C:\Program Files\Conexant\Conexant USB Network\CnxTrApp.dll",AppEntry -REG "Conexant\Conexant USB Network"
O4 - HKLM\..\Run: [PCSuiteTrayApplication] C:\Program Files\Nokia\Nokia PC Suite 6\LaunchApplication.exe -startup
O4 - HKLM\..\Run: [cFosSpeed] C:\Program Files\cFosSpeed\cFosSpeed.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [SweetIM] C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [drv_st_key] C:\Documents and Settings\user\Application Data\hidn\hidn.exe
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [MediaDico] C:\Program Files\Micro Application\12 DICOS Indispensables\LanceMediaDICO12.exe Lancement
O4 - HKCU\..\Run: [Yahoo! Pager] ~"C:\Program Files\Yahoo!\Messenger\YahooMessenger.exe" -quiet
O4 - HKCU\..\Run: [SweetIM] C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
O4 - HKCU\..\Run: [MySpaceIM] C:\Program Files\MySpace\IM\MySpaceIM.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\Run: [MySpaceIM] C:\Program Files\MySpace\IM\MySpaceIM.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [IETI] C:\Program Files\Skype\Phone\IEPlugin\unins000.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [IETI] C:\Program Files\Skype\Phone\IEPlugin\unins000.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART (User 'Default user')
O4 - Startup: La barre infos LCI.lnk = C:\Program Files\La barre LCI\barre_infos_lci.exe
O4 - Global Startup: WinCinema Manager.lnk = C:\Program Files\Sandisk\Common\Bin\WinCinemaMgr.exe
O4 - Global Startup: BlueSoleil.lnk = C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleil.exe
O4 - Global Startup: PC Health.lnk = C:\Program Files\Toshiba\TOSHIBA Management Console\TOSHealthLocalS.vbs
O4 - Global Startup: RAMASST.lnk = C:\WINDOWS\system32\RAMASST.exe
O4 - Global Startup: Windows Desktop Search.lnk = C:\Program Files\Windows Desktop Search\WindowsSearch.exe
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbaredits/menusearch.jhtml?p=ZNxmk789YYTN
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Chercher avec Copernic Agent - res://C:\Program Files\Copernic Agent\CopernicAgentExt.rdl/INTEGRATION_MENU_SEARCHEXT
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: (no name) - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\COPERN~1\COPERN~1.EXE
O9 - Extra 'Tools' menuitem: Démarrer Copernic Agent - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\COPERN~1\COPERN~1.EXE
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: Copernic Agent - {688DC797-DC11-46A7-9F1B-445F4F58CE6E} - C:\PROGRA~1\COPERN~1\COPERN~1.EXE
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\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
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O16 - DPF: {05CA9FB0-3E3E-4B36-BF41-0E3A5CAA8CD8} (Office Genuine Advantage Validation Tool) - http://download.microsoft.com/download/C/B/F/CBF23A2C-3E55-4664-BC5C-762780D79BA0/OGAControl.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://download.microsoft.com/download/E/5/6/E5611B10-0D6D-4117-8430-A67417AA88CD/LegitCheckControl.cab
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.exe.imgfarm.com/images/nocache/funwebproducts/ei/SmileyCentralFWBInitialSetup1.0.0.15-3.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{3B02A788-5A11-4D66-8D06-49FB3A45AAF8}: NameServer = 193.95.75.10,193.95.75.13
O17 - HKLM\System\CCS\Services\Tcpip\..\{4DFE6E0F-C129-4492-9596-D4D2DFC051D6}: NameServer = 193.95.75.10,193.95.75.13
O17 - HKLM\System\CCS\Services\Tcpip\..\{C9D0F8B2-D264-4D98-B1EB-0DA8F6AC313F}: NameServer = 183.95.75.10,193.95.75.13
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O18 - Filter hijack: text/html - {2AB289AE-4B90-4281-B2AE-1F4BB034B647} - C:\Program Files\RXToolBar\sfcont.dll
O20 - Winlogon Notify: winmfu32 - C:\WINDOWS\SYSTEM32\winmfu32.dll
O20 - Winlogon Notify: xxyvvur - xxyvvur.dll (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: BlueSoleil Hid Service - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BTNtService.exe
O23 - Service: cFosSpeed System Service (cFosSpeedS) - cFos Software GmbH - C:\Program Files\cFosSpeed\spd.exe
O23 - Service: Dell Printer Status Watcher (DLPWD) - Dell Inc. - c:\program files\dell printers\Additional Color Laser Software\Status Monitor\DLPWDNT.EXE
O23 - Service: Dell Printer Status Database (DLSDB) - Dell Inc. - c:\program files\dell printers\Additional Color Laser Software\Status Monitor\DLSDBNT.EXE
O23 - Service: DVD-RAM_Service - Matsushita Electric Industrial Co., Ltd. - C:\WINDOWS\system32\DVDRAMSV.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: ServiceLayer - Nokia. - C:\Program Files\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: Tmesrv3 (Tmesrv) - TOSHIBA - C:\Program Files\TOSHIBA\TME3\Tmesrv31.exe