Pc tres slow probaloement spyware

Bonjours,
depuis quelques jours mon p.c est tres slow, j'ai pl;ein de process inconnu dans le gestionnaire de tache et suis plutot novice en la matiere.

je poste ici le log de hijackthis

merci a l'avance


Azathoth133


Logfile of HijackThis v1.99.1
Scan saved at 20:30:24, on 2007-05-05
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
F:\WINDOWS\System32\smss.exe
F:\WINDOWS\system32\csrss.exe
F:\WINDOWS\system32\winlogon.exe
F:\WINDOWS\system32\services.exe
F:\WINDOWS\system32\lsass.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\System32\svchost.exe
C:\programme\firewall\smc.exe
F:\WINDOWS\System32\svchost.exe
F:\WINDOWS\System32\svchost.exe
F:\WINDOWS\Explorer.EXE
F:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
F:\Program Files\Alwil Software\Avast4\ashServ.exe
F:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
F:\WINDOWS\system32\rundll32.exe
F:\WINDOWS\system32\spoolsv.exe
F:\Program Files\Lavasoft\Ad-Aware Pro\aawservice.exe
F:\WINDOWS\System32\svchost.exe
F:\WINDOWS\System32\wbem\wmiprvse.exe
F:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
F:\Program Files\Alwil Software\Avast4\ashWebSv.exe
F:\WINDOWS\System32\alg.exe
F:\WINDOWS\System32\svchost.exe
F:\Program Files\MSN Messenger\usnsvc.exe
F:\Program Files\Winamp\Winamp.exe
C:\MOZILLA\Mozilla Firefox 2 Beta 2\firefox.exe
C:\programme\utilitaire\adobe\Reader\AcroRd32Info.exe
F:\Documents and Settings\Propriétaire\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.lelezard.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O4 - HKLM\..\Run: [SmcService] C:\PROGRA~1\firewall\smc.exe -startgui
O4 - HKLM\..\Run: [avast!] F:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [TrojanScanner] F:\Program Files\Trojan Remover\Trjscan.exe
O4 - HKLM\..\Run: [VaCtrls] v7
O4 - HKLM\..\Run: [oqytywe.dll] F:\WINDOWS\system32\rundll32.exe F:\WINDOWS\system32\oqytywe.dll,dmrxmf
O4 - HKCU\..\Run: [MsnMsgr] "F:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O8 - Extra context menu item: Ajouter à &Windows Live favorites - https://onedrive.live.com/?id=favorites
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://F:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - F:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - F:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
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)
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: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Syma