PC lent avec publicité internet qui s'affiche

Bonjour,
Depuis quelques jours j'ai des publicités qui arrive lorsque je surfe sur internet alors que je n'ai jamais eu ce problème avant. Mon rodinateur est assez lent et souvent internet explorer me met un message d'erreur en me disant que par sécurité ma page va être fermée. J'ai regarder les performances qui semblent être normal. Quand je fais un scan avec Spybot j'ai des problèmes "Virtumonde"mais impossible de les supprimer. J'ai fait une analyse hijackthis:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12:39:23, on 23/04/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
C:\Program Files\Intel\Wireless\Bin\S24EvMon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\Dassault Systemes\B15\intel_a\code\bin\CATSysDemon.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
C:\Program Files\Network Associates\VirusScan\Mcshield.exe
C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
C:\WINDOWS\system32\PnkBstrA.exe
c:\Program Files\ASUS Security Center\ASUS Security Protect Manager\Bin\AsGHost.exe
C:\WINDOWS\system32\PnkBstrB.exe
C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\ATK0100\HControl.exe
C:\WINDOWS\ehome\ehtray.exe
C:\WINDOWS\eHome\ehmsas.exe
C:\Program Files\Motorola\SMSERIAL\sm56hlpr.exe
C:\Program Files\ASUS\ASUS Live Update\ALU.exe
C:\Program Files\ASUSTeK\ASUSDVD\PDVDServ.exe
C:\WINDOWS\ATK0100\ATKOSD.exe
C:\Program Files\ASUS\Power4 Gear\BatteryLife.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.EXE
C:\Program Files\Network Associates\VirusScan\SHSTAT.EXE
C:\Program Files\Network Associates\Common Framework\UpdaterUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
C:\Program Files\ASUS\Net4Switch\Net4Switch.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Assistant Dartybox\Upgrade_Manager.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Program Files\ASUS\Asus MultiFrame\MultiFrame.exe
C:\Program Files\Fichiers communs\Logitech\KhalShared\KHALMNPR.EXE
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\MSN Messenger\usnsvc.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\explorer.exe
C:\Documents and Settings\Alexandra Gouet\Bureau\Scanner.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.asus.com/fr/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 193.52.45.49:8084
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {0D58280F-64D1-48E4-9D88-D9A6DCCBBC62} - C:\WINDOWS\system32\xxyxYppo.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O2 - BHO: (no name) - {B7C73804-6078-4D9C-8E74-7F0465DCB105} - C:\WINDOWS\system32\fccaxVnn.dll (file missing)
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: PDFCreator Toolbar Helper - {C451C08A-EC37-45DF-AAAD-18B51AB5E837} - C:\Program Files\PDFCreator Toolbar\v3.0.0.0\PDFCreator_Toolbar.dll
O2 - BHO: {0b19af80-be8a-019b-d1c4-62d478a95f6d} - {d6f59a87-4d26-4c1d-b910-a8eb08fa91b0} - C:\WINDOWS\system32\bfpasrds.dll (file missing)
O2 - BHO: (no name) - {EEC73EA5-1367-49D1-93F4-CA1D8C22E9F9} - C:\WINDOWS\system32\pmnoLdEw.dll
O3 - Toolbar: PDFCreator Toolbar - {31CF9EBE-5755-4A1D-AC25-2834D952D9B4} - C:\Program Files\PDFCreator Toolbar\v3.0.0.0\PDFCreator_Toolbar.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O4 - HKLM\..\Run: [HControl] C:\WINDOWS\ATK0100\HControl.exe
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [SMSERIAL] C:\Program Files\Motorola\SMSERIAL\sm56hlpr.exe
O4 - HKLM\..\Run: [ASUS Live Update] C:\Program Files\ASUS\ASUS Live Update\ALU.exe
O4 - HKLM\..\Run: [CognizanceTS] rundll32.exe c:\PROGRA~1\ASUSSE~1\ASUSSE~1\Bin\ASTSVCC.dll,RegisterModule
O4 - HKLM\..\Run: [ABLKSR] C:\WINDOWS\ABLKSR\ABLKSR.exe
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\ASUSTeK\ASUSDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\CLIStart.exe"
O4 - HKLM\..\Run: [Power_Gear] C:\Program Files\ASUS\Power4 Gear\BatteryLife.exe 1
O4 - HKLM\..\Run: [Logitech Hardware Abstraction Layer] "C:\Program Files\Fichiers communs\Logitech\KhalShared\KHALMNPR.EXE"
O4 - HKLM\..\Run: [ShStatEXE] "C:\Program Files\Network Associates\VirusScan\SHSTAT.EXE" /STANDALONE
O4 - HKLM\..\Run: [McAfeeUpdaterUI] "C:\Program Files\Network Associates\Common Framework\UpdaterUI.exe" /StartedFromRunKey
O4 - HKLM\..\Run: [BMef2b2edc] Rundll32.exe "C:\WINDOWS\system32\lidmmtbf.dll",s
O4 - HKLM\..\Run: [ec181d40] rundll32.exe "C:\WINDOWS\system32\qarxvqxm.dll",b
O4 - HKLM\..\RunOnce: [SpybotDeletingA6697] command /c del "C:\WINDOWS\system32\bfpasrds.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingC7146] cmd /c del "C:\WINDOWS\system32\bfpasrds.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingA112] command /c del "C:\WINDOWS\system32\jwvvngau.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingC1697] cmd /c del "C:\WINDOWS\system32\jwvvngau.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingA9394] command /c del "C:\WINDOWS\system32\lidmmtbf.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingC7755] cmd /c del "C:\WINDOWS\system32\lidmmtbf.dll_old"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [LDM] C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
O4 - HKCU\..\Run: [Net4Switch] C:\Program Files\ASUS\Net4Switch\Net4Switch.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [L'Assistant DartyBox] C:\Program Files\Assistant Dartybox\Upgrade_Manager.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: Logitech Desktop Messenger.lnk = C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
O4 - Global Startup: Logitech SetPoint.lnk = ?
O4 - Global Startup: MultiFrame.lnk = ?
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Add to Windows &Live Favorites - https://onedrive.live.com/?id=favorites
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Ouvrir dans un nouvel onglet d'arrière-plan - res://C:\Program Files\Windows Live Toolbar\Components\fr-fr\msntabres.dll.mui/229?615ab5251d344b0792390450409c8717
O8 - Extra context menu item: Ouvrir dans un nouvel onglet de premier plan - res://C:\Program Files\Windows Live Toolbar\Components\fr-fr\msntabres.dll.mui/230?615ab5251d344b0792390450409c8717
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.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
O14 - IERESET.INF: START_PAGE_URL=https://www.asus.com/fr/
O15 - Trusted Zone: www.secuser.com
O16 - DPF: {05CA9FB0-3E3E-4B36-BF41-0E3A5CAA8CD8} (Office Genuine Advantage Validation Tool) - http://download.microsoft.com/download/C/B/F/CBF23A2C-3E55-4664-BC5C-762780D79BA0/OGAControl.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O18 - Protocol: bwfile-8876480 - {9462A756-7B47-47BC-8C80-C34B9B80B32B} - C:\Program Files\Logitech\Desktop Messenger\8876480\Program\GAPlugProtocol-8876480.dll
O20 - AppInit_DLLs: apshook.dll
O20 - Winlogon Notify: OneCard - c:\Program Files\ASUS Security Center\ASUS Security Protect Manager\Bin\ASWLNPkg.dll
O20 - Winlogon Notify: pmnoLdEw - C:\WINDOWS\SYSTEM32\pmnoLdEw.dll
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: Backbone Service (BBDemon) - Dassault Systemes - C:\Program Files\Dassault Systemes\B15\intel_a\code\bin\CATSysDemon.exe
O23 - Service: Intel(R) PROSet/Wireless Event Log (EvtEng) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Service Framework McAfee (McAfeeFramework) - McAfee, Inc. - C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
O23 - Service: Network Associates McShield (McShield) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\Mcshield.exe
O23 - Service: Network Associates Task Manager (McTaskManager) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
O23 - Service: PnkBstrB - Unknown owner - C:\WINDOWS\system32\PnkBstrB.exe
O23 - Service: Intel(R) PROSet/Wireless Registry Service (RegSrvc) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: Intel(R) PROSet/Wireless Service (S24EventMonitor) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\S24EvMon.exe