PC très lent au démarrage de Windows XP

Bonjour,

Mon PC est très lent depuis un moment au démarrage de windows XP.

Qu'est ce que quelqu'un peut m'aider.

Voici un scan de HijackThis :

Logfile of HijackThis v1.99.1
Scan saved at 23:06:05, on 09.11.2005
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:\WINDOWS\System32\svchost.exe
C:\Program Files\Ahead\InCD\InCDsrv.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\McAfee\McAfee Privacy Service\GUARDDOG.EXE
C:\WINDOWS\ATKKBService.exe
C:\Program Files\Symantec\Norton Ghost 2003\GhostStartService.exe
c:\PROGRA~1\mcafee.com\vso\mcvsrte.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
C:\PROGRA~1\McAfee\SPAMKI~1\MSKSrvr.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
c:\PROGRA~1\mcafee.com\vso\mcshield.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\McAfee\McAfee Privacy Service\GUARDDOG.EXE
C:\PROGRA~1\McAfee.com\PERSON~1\MpfAgent.exe
c:\program files\mcafee.com\agent\mcagent.exe
C:\Program Files\Ahead\InCD\InCD.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\PROGRA~1\mcafee.com\vso\mcvsshld.exe
c:\progra~1\mcafee.com\vso\mcvsescn.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\McAfee\McAfee Shared Components\Guardian\CMGrdian.exe
C:\PROGRA~1\McAfee\SPAMKI~1\MSKAgent.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpohmr08.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\Program Files\Sony Corporation\Image Transfer\SonyTray.exe
c:\progra~1\mcafee.com\vso\mcvsftsn.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpoevm08.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\Bin\hpoSTS08.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\cleanmgr.exe
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpSvc.exe
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpCtr.exe
C:\unzipped\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.bluewin.ch/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} -
C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} -
c:\program files\google\googletoolbar2.dll
O2 - BHO: McAfee Privacy Service - {cc4b2ee5-4803-11d7-8a38-00b0d0c6b814} -
C:\Program Files\McAfee\McAfee Privacy Service\GDIEHELP.DLL
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} -
c:\progra~1\mcafee.com\vso\mcvsshl.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program
files\google\googletoolbar2.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} -
C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [InCD] C:\Program Files\Ahead\InCD\InCD.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE
C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE
C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [VSOCheckTask] "c:\PROGRA~1\mcafee.com\vso\mcmnhdlr.exe"
/checktask
O4 - HKLM\..\Run: [VirusScan Online] "c:\PROGRA~1\mcafee.com\vso\mcvsshld.exe"
O4 - HKLM\..\Run: [MCAgentExe] c:\PROGRA~1\mcafee.com\agent\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] C:\PROGRA~1\mcafee.com\agent\McUpdate.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe"
-atboottime
O4 - HKLM\..\Run: [McAfee Guardian] C:\Program Files\McAfee\McAfee Shared
Components\Guardian\CMGrdian.exe /SU
O4 - HKLM\..\Run: [MSKAGENTEXE] C:\PROGRA~1\McAfee\SPAMKI~1\MSKAgent.exe
O4 - HKLM\..\Run: [MSKDetectorExe] C:\PROGRA~1\McAfee\SPAMKI~1\MSKDetct.exe
/startup
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.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 - HKCU\..\Run: [MSKAGENTEXE] C:\PROGRA~1\McAfee\SPAMKI~1\MSKAgent.exe
O4 - Global Startup: hp psc 1000 series.lnk = ?
O4 - Global Startup: hpoddt01.exe.lnk = ?
O4 - Global Startup: Image Transfer.lnk = ?
O8 - Extra context menu item: &Traduire à partir de l'anglais -
res://c:\program files\google\GoogleToolbar2.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel -
res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://c:\program
files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program
files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://c:\program
files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le
cache Google - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} -
C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Privacy Bar - {cc4b2ee5-4803-11d7-8a38-00b0d0c6b814} -
C:\Program Files\McAfee\McAfee Privacy Service\GDIEHELP.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
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} -
http://ak.imgfarm.com/images/nocache/funwebproducts/ei/SmileyCentralFWBInitialSetup1.0.0.15.cab
O16 - DPF: {4ED9DDF0-7479-4BBE-9335-5A1EDB1D8A21} (McAfee.com Operating
System Class) -
http://download.mcafee.com/molbin/shared/mcinsctl/en-us/4,0,0,83/mcinsctl.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient
Class) -
http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {BCC0FF27-31D9-4614-A68E-C18E1ADA4389} (DwnldGroupMgr Class) -
http://download.mcafee.com/molbin/shared/mcgdmgr/en-us/1,0,0,20/mcgdmgr.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} -
"C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: ATK Keyboard Service (ATKKeyboardService) - ASUSTeK COMPUTER
INC. - C:\WINDOWS\ATKKBService.exe
O23 - Service: GhostStartService - Symantec Corporation - C:\Program
Files\Symantec\Norton Ghost 2003\GhostStartService.exe
O23 - Service: McAfee Privacy Service (GuardDogEXE) - Unknown owner -
C:\Program Files\McAfee\McAfee Privacy Service\GUARDDOG.EXE" /SERVICE (file
missing)
O23 - Service: InCD Helper (InCDsrv) - Ahead Software AG - C:\Program
Files\Ahead\InCD\InCDsrv.exe
O23 - Service: McAfee.com McShield (McShield) - Unknown owner -
c:\PROGRA~1\mcafee.com\vso\mcshield.exe
O23 - Service: McAfee SecurityCenter Update Manager (mcupdmgr.exe) - McAfee,
Inc - C:\PROGRA~1\McAfee.com\Agent\mcupdmgr.exe
O23 - Service: McAfee.com VirusScan Online Realtime Engine (MCVSRte) -
Networks Associates Technology, Inc - c:\PROGRA~1\mcafee.com\vso\mcvsrte.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee
Corporation - C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
O23 - Service: McAfee SpamKiller Server (MskService) - McAfee Inc. -
C:\PROGRA~1\McAfee\SPAMKI~1\MSKSrvr.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation -
C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe

Merci pour votre aide...