Message d'erreur au démarrage de windows

Bonjour, quand je démarre windows, j'ai un méssage d'érreur : c:windows/system32/winsys516_061230.dll
Voici mon rapport avec hijackthis.

Scan saved at 16:24:05, on 24/03/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\Explorer.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\Fichiers communs\BitDefender\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Fichiers communs\BitDefender\BitDefender Update Service\livesrv.exe
C:\Program Files\BitDefender\BitDefender 2008\vsserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\DOCUME~1\Seb\LOCALS~1\Temp\Répertoire temporaire 1 pour hijackthis_199.zip\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.be/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\userinit.exe,rundll32.exe C:\WINDOWS\system32\winsys16_061230.dll start
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_04\bin\ssv.dll
O3 - Toolbar: BitDefender Toolbar - {381FFDE8-2394-4f90-B10D-FC6124A40F8C} - C:\Program Files\BitDefender\BitDefender 2008\IEToolbar.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: PartyCasino - {B4B52284-A248-4c51-9F7C-F0A0C67FCC9D} - C:\Program Files\PartyGaming\PartyCasino\RunApp.exe (file missing)
O9 - Extra 'Tools' menuitem: PartyCasino - {B4B52284-A248-4c51-9F7C-F0A0C67FCC9D} - C:\Program Files\PartyGaming\PartyCasino\RunApp.exe (file missing)
O9 - Extra button: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyGaming\PartyPoker\RunApp.exe
O9 - Extra 'Tools' menuitem: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyGaming\PartyPoker\RunApp.exe
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/resources/scan8/oscan8.cab
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - Unknown owner - C:\Program Files\Fichiers communs\BitDefender\BitDefender Update Service\livesrv.exe" /service (file missing)
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\BitDefender\BitDefender 2008\vsserv.exe" /service (file missing)
O23 - Service: BitDefender Communicator (XCOMM) - Unknown owner - C:\Program Files\Fichiers communs\BitDefender\BitDefender Communicator\xcommsvr.exe" /service (file missing)

d'avance merci.
Seb