EEE pc lent virus ?

Bonjour,

je fais appel à votre aide car mon EEE pc serie 1005 est devenu extrêmement lent surtout lors de la navigation internet ... une personne aurait il la gentillesse de m'accorder un peu de son temps pour résoudre ce problème ? Je vous remercie d'avance .
Pour gagner du temps j'ai effectué un copié/collé du rapport Hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:32:54, on 17/10/2011
Platform: Unknown Windows (WinNT 6.01.3504)
MSIE: Internet Explorer v8.00 (8.00.7600.16385)
Boot mode: Normal

Running processes:
C:\windows\system32\Dwm.exe
C:\windows\Explorer.EXE
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Trend Micro\Internet Security\UfSeAgnt.exe
C:\Program Files\Synaptics\SynTP\SynAsusAcpi.exe
C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe
C:\windows\system32\wuauclt.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Users\Pierre\Downloads\HiJackThis.exe
C:\windows\system32\DllHost.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SearchHelper.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O4 - HKLM\..\Run: [IAAnotif] C:\Program Files\Intel\Intel Matrix Storage Manager\iaanotif.exe
O4 - HKLM\..\Run: [SynTPEnh] %ProgramFiles%\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [HotkeyMon] AsusSender.exe C:\Program Files\EeePC\HotkeyService\HotKeyMon.exe
O4 - HKLM\..\Run: [HotkeyService] AsusSender.exe C:\Program Files\EeePC\HotkeyService\HotkeyService.exe
O4 - HKLM\..\Run: [SuperHybridEngine] AsusSender.exe C:\Program Files\EeePC\SHE\SuperHybridEngine.exe
O4 - HKLM\..\Run: [UfSeAgnt.exe] "C:\Program Files\Trend Micro\Internet Security\UfSeAgnt.exe"
O4 - HKLM\..\Run: [Eee Docking] C:\Program Files\ASUS\Eee Docking\Eee Docking.exe autorun
O4 - HKLM\..\Run: [LiveUpdate] AsusSender.exe C:\Program Files\Asus\LiveUpdate\LiveUpdate.exe auto
O4 - HKLM\..\Run: [SynAsusAcpi] %ProgramFiles%\Synaptics\SynTP\SynAsusAcpi.exe
O4 - HKLM\..\Run: [ASUS Screen Saver Protector] C:\Windows\AsScrPro.exe
O4 - HKLM\..\Run: [EeeSplendidAgent] C:\Program Files\ASUS\EPC\EeeSplendid\AsAgent.exe
O4 - HKLM\..\Run: [ASUS WebStorage] C:\Program Files\ASUS\ASUS WebStorage\SERVICE\AsusWSService.exe MySyncFolder
O4 - HKLM\..\Run: [UCam_Menu] "C:\Program Files\CyberLink\YouCam\MUITransfer\MUIStartMenu.exe" "C:\Program Files\CyberLink\YouCam" UpdateWithCreateOnce "Software\CyberLink\YouCam\2.0"
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: [RtHDVCpl] C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe -s
O4 - HKLM\..\Run: [ASUSPRP] C:\Program Files\ASUS\APRP\APRP.EXE
O4 - HKCU\..\Run: [FAST Defrag] C:\PROGRA~1\FDF\FAST2.EXE -tray
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Verzenden naar OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: Verz&enden naar OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: (no name) - {5067A26B-1337-4436-8AFE-EE169C2DA79F} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra 'Tools' menuitem: Skype add-on for Internet Explorer - {5067A26B-1337-4436-8AFE-EE169C2DA79F} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O23 - Service: Asus Launcher Service (AsusService) - Unknown owner - C:\Windows\System32\AsusService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
O23 - Service: Oberon Media Game Console service (OberonGameConsoleService) - Unknown owner - C:\Program Files\Asus\Game Park\GameConsole\OberonGameConsoleService.exe
O23 - Service: Trend Micro Central Control Component (SfCtlCom) - Trend Micro Inc. - C:\Program Files\Trend Micro\Internet Security\SfCtlCom.exe
O23 - Service: Trend Micro Unauthorized Change Prevention Service (TMBMServer) - Trend Micro Inc. - C:\Program Files\Trend Micro\BM\TMBMSRV.exe
O23 - Service: Trend Micro Personal Firewall (TmPfw) - Trend Micro Inc. - C:\Program Files\Trend Micro\Internet Security\TmPfw.exe
O23 - Service: Trend Micro Proxy Service (TmProxy) - Trend Micro Inc. - C:\Program Files\Trend Micro\Internet Security\TmProxy.exe
O23 - Service: VundoFix Service (VundoFixSvc) - Atribune.org - C:\windows\SYSTEM32\VundoFixSVC.exe