[Virus] Ram augmente jusqu'à saturation

Bonjour,

Depuis hier, j'ai un problème avec mon PC qui tourne sous Vista Ultimate et avec 3 Go de Ram.
J'ai déjà fait des scan anti virus et anti spyware en mode sans échec mais rien n'a été trouvé.
Lorsque je démarre mon pc, la vitesse de chargement jusque la page d'acceuil de vista pour l'ouverture de mon compte dure 5 min au lieu de 30 seconde habituellement. Et lorsque mon PC est démarré la mémoire augmente prgressivement de son niveau habituel jusqu'à saturation et là il n'est plus possible de faire quelque chose je ne peux même plus ouvrir le gestionnaire de tache.

Est-ce que quelqu'un peut m'aider s'il vous plait?

J'ai fait un scan avec hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 14:57:20, on 28/08/2009
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18813)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Program Files\ASUS\AASP\1.00.59\aaCenter.exe
C:\Windows\system32\taskeng.exe
C:\Program Files\ASUS\AI Suite\EnergySaving\PwSave.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Analog Devices\SoundMAX\SoundTray.exe
C:\Program Files\ASUS\AI Suite\AiNap\AiNap.exe
C:\Program Files\ASUS\AI Suite\AiGear3\CpuPowerMonitor.exe
C:\Program Files\Windows Media Player\WMPSideShowGadget.exe
C:\Program Files\Logitech\GamePanel Software\LGDevAgt.exe
C:\Program Files\Logitech\GamePanel Software\LCD Manager\LCDMon.exe
C:\Program Files\Logitech\GamePanel Software\G-series Software\LGDCore.exe
C:\Program Files\Razer\Copperhead\razerhid.exe
C:\Program Files\Common Files\Logitech\QCDriver\LVComS.exe
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\Program Files\Lavasoft\Ad-Aware\AAWTray.exe
C:\Program Files\Windows Media Player\wmplayer.exe
C:\Program Files\Analog Devices\Core\smax4pnp.exe
C:\Windows\WindowsMobile\wmdc.exe
C:\Program Files\CyberLink\PowerDVD9\PDVD9Serv.exe
C:\Program Files\CyberLink\Shared Files\brs.exe
C:\Program Files\Common Files\LogiShrd\LComMgr\Communications_Helper.exe
C:\Program Files\Logitech\QuickCam10\QuickCam10.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\DAEMON Tools Lite\daemon.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\RocketDock\RocketDock.exe
C:\Program Files\Logitech\GamePanel Software\Applets\LCDCountdown.exe
C:\Program Files\Razer\Copperhead\razerofa.exe
C:\Program Files\Logitech\GamePanel Software\Applets\LCDMedia.exe
C:\Program Files\Logitech\GamePanel Software\Applets\LCDClock.exe
C:\Program Files\Logitech\GamePanel Software\Applets\LCDPop3.exe
C:\Program Files\Logitech\GamePanel Software\Applets\LCDRSS.exe
C:\Program Files\Common Files\LogiShrd\LComMgr\LVComSX.exe
C:\Program Files\Skype\Plugin Manager\skypePM.exe
C:\Program Files\Common Files\Logishrd\LQCVFX\COCIManager.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CCC.exe
C:\Windows\system32\conime.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtblfs.exe
C:\Windows\system32\Macromed\Flash\FlashUtil10c.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\VideoLAN\VLC\vlc.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Users\Chris211\Desktop\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: IEVkbdBHO - {59273AB4-E7D3-40F9-A1A8-6FA9CCA1862C} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\ievkbd.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Program Files\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live ID - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.1.1309.3572\swg.dll
O2 - BHO: link filter bho - {E33CF602-D945-461A-83F0-819F76A199F8} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [SoundTray] C:\Program Files\Analog Devices\SoundMAX\SoundTray.exe
O4 - HKLM\..\Run: [Ai Nap] "C:\Program Files\ASUS\AI Suite\AiNap\AiNap.exe"
O4 - HKLM\..\Run: [CPU Power Monitor] "C:\Program Files\ASUS\AI Suite\AiGear3\CpuPowerMonitor.exe"
O4 - HKLM\..\Run: [Cpu Level Up help] C:\Program Files\ASUS\AI Suite\CpuLevelUpHelp.exe
O4 - HKLM\..\Run: [JMB36X IDE Setup] C:\Windows\RaidTool\xInsIDE.exe
O4 - HKLM\..\Run: [Launch LgDeviceAgent] "C:\Program Files\Logitech\GamePanel Software\LgDevAgt.exe"
O4 - HKLM\..\Run: [Launch LCDMon] "C:\Program Files\Logitech\GamePanel Software\LCD Manager\LCDMon.exe"
O4 - HKLM\..\Run: [Launch LGDCore] "C:\Program Files\Logitech\GamePanel Software\G-series Software\LGDCore.exe" /SHOWHIDE
O4 - HKLM\..\Run: [razer] C:\Program Files\Razer\Copperhead\razerhid.exe
O4 - HKLM\..\Run: [LVCOMS] C:\Program Files\Common Files\Logitech\QCDriver\LVCOMS.EXE
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Program Files\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [Windows Mobile Device Center] %windir%\WindowsMobile\wmdc.exe
O4 - HKLM\..\Run: [RemoteControl9] "C:\Program Files\CyberLink\PowerDVD9\PDVD9Serv.exe"
O4 - HKLM\..\Run: [PDVD9LanguageShortcut] "C:\Program Files\CyberLink\PowerDVD9\Language\Language.exe"
O4 - HKLM\..\Run: [BDRegion] C:\Program Files\Cyberlink\Shared Files\brs.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [LogitechCommunicationsManager] "C:\Program Files\Common Files\LogiShrd\LComMgr\Communications_Helper.exe"
O4 - HKLM\..\Run: [LogitechQuickCamRibbon] "C:\Program Files\Logitech\QuickCam10\QuickCam10.exe" /hide
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [Ad-Watch] C:\Program Files\Lavasoft\Ad-Aware\AAWTray.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [AVP] "C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\avp.exe"
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [Google Update] "C:\Users\Chris211\AppData\Local\Google\Update\GoogleUpdate.exe" /c
O4 - HKCU\..\Run: [DAEMON Tools Lite] "C:\Program Files\DAEMON Tools Lite\daemon.exe" -autorun
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Steam] "C:\Program Files\Steam\Steam.exe" -silent
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [RocketDock] "C:\Program Files\RocketDock\RocketDock.exe"
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O8 - Extra context menu item: Ajouter à l'Anti-bannière - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\ie_banner_deny.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MI1933~1\Office12\EXCEL.EXE/3000
O9 - Extra button: Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MI1933~1\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MI1933~1\Office12\ONBttnIE.dll
O9 - Extra button: @C:\Windows\WindowsMobile\INetRepl.dll,-222 - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra 'Tools' menuitem: @C:\Windows\WindowsMobile\INetRepl.dll,-223 - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra button: Clavier &virtuel - {4248FE82-7FCB-46AC-B270-339F08212110} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MI1933~1\Office12\REFIEBAR.DLL
O9 - Extra button: Analyse des &liens - {CCF151D8-D089-449F-A5A4-D9909053F20F} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O13 - Gopher Prefix:
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Program Files\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: C:\PROGRA~1\KASPER~1\KASPER~1\mzvkbd3.dll,C:\PROGRA~1\KASPER~1\KASPER~1\kloehk.dll
O22 - SharedTaskScheduler: Windows DreamScene - {E31004D1-A431-41B8-826F-E902F9D95C81} - C:\Windows\System32\DreamScene.dll
O23 - Service: Andrea ADI Filters Service (AEADIFilters) - Andrea Electronics Corporation - C:\Windows\system32\AEADISRV.EXE
O23 - Service: AMD External Events Utility - AMD - C:\Windows\system32\atiesrxx.exe
O23 - Service: Kaspersky Internet Security (AVP) - Kaspersky Lab - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\avp.exe
O23 - Service: Service Google Update (gupdate1c9f405e7ea433a) (gupdate1c9f405e7ea433a) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Lavasoft Ad-Aware Service - Lavasoft - C:\Program Files\Lavasoft\Ad-Aware\AAWService.exe
O23 - Service: Process Monitor (LVPrcSrv) - Logitech Inc. - c:\program files\common files\logishrd\lvmvfm\LVPrcSrv.exe
O23 - Service: LVSrvLauncher - Logitech Inc. - C:\Program Files\Common Files\LogiShrd\SrvLnch\SrvLnch.exe
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: PnkBstrB - Unknown owner - C:\Windows\system32\PnkBstrB.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe