PC très lent

Bonjour,

Depuisn quelques temps mon PC tourne au ralenti, impossibilité d'ouvrir 2 pages internet en meme temps... il a 2 ans et possède 1 Go de RAM
j'ai déjà passer ccleaner dessus, spybot et malwarebytes.
Je viens de faire une vérification avec combofix et voici le rapport:

ComboFix 11-05-03.03 - Administrateur 04/05/2011 11:44:27.1.2 - x86
Microsoft Windows XP Professionnel 5.1.2600.3.1252.33.1036.18.894.390 [GMT 2:00]
Lancé depuis: c:\documents and settings\Administrateur\Bureau\hghghhh.exe
AV: BitDefender Antivirus *Enabled/Updated* {6C4BB89C-B0ED-4F41-A29C-4373888923BB}
FW: BitDefender Pare-feu *Enabled* {4055920F-2E99-48A8-A270-4243D2B8F242}
* Un antivirus résident est actif
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(((((((((((((((((((((((((((((((((((( Autres suppressions ))))))))))))))))))))))))))))))))))))))))))))))))
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C:\install.exe
D:\Autorun.inf
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((((((((((((((((((((((((((((( Fichiers créés du 2011-04-04 au 2011-05-04 ))))))))))))))))))))))))))))))))))))
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2011-05-04 09:07 . 2011-05-04 09:07 -------- d-----w- c:\documents and settings\Administrateur\Application Data\Malwarebytes
2011-05-04 08:59 . 2010-12-20 16:09 38224 ----a-w- c:\windows\system32\drivers\mbamswissarmy.sys
2011-05-04 08:59 . 2011-05-04 08:59 -------- d-----w- c:\documents and settings\All Users\Application Data\Malwarebytes
2011-05-04 08:59 . 2010-12-20 16:08 20952 ----a-w- c:\windows\system32\drivers\mbam.sys
2011-05-04 08:59 . 2011-05-04 08:59 -------- d-----w- c:\program files\Malwarebytes' Anti-Malware
2011-05-03 14:19 . 2011-05-03 14:19 -------- d-----w- c:\program files\CCleaner
2011-05-03 14:12 . 2011-05-04 08:35 -------- d-----w- c:\documents and settings\All Users\Application Data\Spybot - Search & Destroy
2011-05-03 14:12 . 2011-05-03 14:13 -------- d-----w- c:\program files\Spybot - Search & Destroy
2011-04-17 09:59 . 2011-04-17 09:59 -------- d-----w- c:\documents and settings\NetworkService\Application Data\QuickScan
2011-04-13 12:42 . 2011-04-13 12:42 -------- d-----w- c:\documents and settings\LocalService\Application Data\QuickScan
2011-04-13 12:39 . 2011-04-13 12:39 -------- d-----w- c:\documents and settings\All Users\Application Data\bdch
2011-04-13 12:21 . 2011-04-13 12:21 -------- d-----w- c:\documents and settings\Administrateur\Application Data\BitDefender
2011-04-13 12:21 . 2011-04-13 12:21 -------- d-----w- c:\program files\BitDefender
2011-04-13 11:12 . 2011-04-13 11:12 -------- d-----w- c:\documents and settings\Administrateur\Application Data\QuickScan
2011-04-13 11:09 . 2011-04-14 08:25 -------- d-----w- c:\documents and settings\All Users\Application Data\BitDefender
2011-04-13 11:09 . 2011-04-13 12:25 308152 ----a-w- c:\windows\system32\drivers\trufos.sys
2011-04-13 11:09 . 2010-07-09 13:08 327368 ----a-w- c:\windows\system32\drivers\bdfsfltr.sys
2011-04-13 11:09 . 2010-05-13 15:02 12960 ----a-w- c:\windows\system32\drivers\bdrawpr.sys
2011-04-13 05:37 . 2011-04-13 12:42 181859 ----a-w- c:\documents and settings\All Users\Application Data\bdinstall.bin
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(((((((((((((((((((((((((((((((((( Compte-rendu de Find3M ))))))))))))))))))))))))))))))))))))))))))))))))
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2011-04-13 12:27 . 2010-05-13 14:52 106456 ----a-w- c:\windows\system32\drivers\bdhv.sys
2011-03-07 05:33 . 2006-03-02 02:00 692736 ----a-w- c:\windows\system32\inetcomm.dll
2011-03-04 06:36 . 2006-03-02 02:00 420864 ----a-w- c:\windows\system32\vbscript.dll
2011-03-03 13:53 . 2008-09-29 08:08 1858048 ----a-w- c:\windows\system32\win32k.sys
2011-02-22 23:05 . 2006-03-02 02:00 916480 ----a-w- c:\windows\system32\wininet.dll
2011-02-22 23:05 . 2006-03-02 02:00 43520 ----a-w- c:\windows\system32\licmgr10.dll
2011-02-22 23:05 . 2006-03-02 02:00 1469440 ------w- c:\windows\system32\inetcpl.cpl
2011-02-22 11:42 . 2006-03-02 02:00 385024 ----a-w- c:\windows\system32\html.iec
2011-02-17 13:18 . 2008-09-29 08:08 455936 ----a-w- c:\windows\system32\drivers\mrxsmb.sys
2011-02-17 13:18 . 2008-09-29 08:08 357888 ----a-w- c:\windows\system32\drivers\srv.sys
2011-02-17 12:54 . 2008-05-05 05:25 5632 ----a-w- c:\windows\system32\xpsp4res.dll
2011-02-15 12:56 . 2006-03-02 02:00 290432 ----a-w- c:\windows\system32\atmfd.dll
2011-02-09 13:54 . 2006-03-02 02:00 270848 ----a-w- c:\windows\system32\sbe.dll
2011-02-09 13:54 . 2006-03-02 02:00 186880 ----a-w- c:\windows\system32\encdec.dll
2011-02-08 13:34 . 2006-03-02 02:00 978944 ----a-w- c:\windows\system32\mfc42.dll
2011-02-08 13:34 . 2006-03-02 02:00 974848 ----a-w- c:\windows\system32\mfc42u.dll
2011-01-01 08:53 . 2011-01-01 08:53 568832 ----a-w- c:\program files\googleupdatesetup.exe
2010-07-08 08:37 . 2010-07-08 08:37 101544 ----a-w- c:\program files\Fichiers communs\LinkInstaller.exe
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((((((((((((((((((((((((((((((((( Points de chargement Reg ))))))))))))))))))))))))))))))))))))))))))))))))
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*Note* les éléments vides & les éléments initiaux légitimes ne sont pas listés
REGEDIT4
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[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NokiaMServer"="c:\program files\Fichiers communs\Nokia\MPlatform\NokiaMServer" [X]
"amd_dc_opt"="c:\program files\AMD\Dual-Core Optimizer\amd_dc_opt.exe" [2007-03-13 77824]
"EPSON Stylus D68 Series (Copie 1)"="c:\windows\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE" [2005-01-25 98304]
"EPSON Stylus D68 Series"="c:\windows\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE" [2005-01-25 98304]
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[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run]
"CTFMON.EXE"="c:\windows\system32\CTFMON.EXE" [2008-04-14 15360]
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Wdf01000.sys]
@="Driver"
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\WudfSvc]
@="Service"
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[HKLM\~\startupfolder\C:^Documents and Settings^All Users^Menu Démarrer^Programmes^Démarrage^Lancement rapide d'Adobe Reader.lnk]
path=c:\documents and settings\All Users\Menu Démarrer\Programmes\Démarrage\Lancement rapide d'Adobe Reader.lnk
backup=c:\windows\pss\Lancement rapide d'Adobe Reader.lnkCommon Startup
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\NokiaMServer]
c:\program files\Fichiers communs\Nokia\MPlatform\NokiaMServer [X]
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\BDAgent]
2011-04-13 12:27 1442152 ----a-w- c:\program files\BitDefender\BitDefender 2011\bdagent.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\BitDefender Antiphishing Helper]
2011-04-13 12:26 71216 ----a-w- c:\program files\BitDefender\BitDefender 2011\ieshow.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\LaunchList]
2007-03-21 13:41 145496 ----a-w- c:\program files\Pinnacle\Studio 11\LaunchList2.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\LightScribe Control Panel]
2007-11-19 12:49 2295072 ----a-w- c:\program files\Fichiers communs\LightScribe\LightScribeControlPanel.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\MSMSGS]
2008-04-14 02:34 1695232 ----a-w- c:\program files\Messenger\msmsgs.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\PDF Complete]
2007-08-07 09:59 331288 ----a-w- c:\program files\PDF Complete\pdfsty.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\Picasa Media Detector]
2008-08-21 01:18 443968 ----a-w- c:\program files\Picasa2\PicasaMediaDetector.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\QuickTime Task]
2008-10-30 19:04 413696 ----a-w- c:\program files\QuickTime\qttask.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\Recguard]
2006-05-12 12:50 1138688 ----a-w- c:\windows\SMINST\Recguard.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\Reminder]
2006-03-31 14:44 761856 ----a-w- c:\windows\CREATOR\Remind_XP.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\Scheduler]
2006-07-10 10:53 872448 ----a-w- c:\windows\SMINST\Scheduler.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\SDMSSplash]
2006-03-10 00:53 86016 ----a-w- c:\program files\HP_SDMS\SDMSSplash\launcher.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\SetRefresh]
2003-11-20 19:01 525824 ----a-w- c:\program files\Compaq\SetRefresh\SetRefresh.exe
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[HKEY_LOCAL_MACHINE\software\microsoft\shared tools\msconfig\startupreg\updateMgr]
2006-03-30 14:45 313472 ----a-r- c:\program files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe
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[HKLM\~\services\sharedaccess\parameters\firewallpolicy\standardprofile]
"EnableFirewall"= 0 (0x0)
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[HKLM\~\services\sharedaccess\parameters\firewallpolicy\standardprofile\AuthorizedApplications\List]
"%windir%\\system32\\sessmgr.exe"=
"c:\\WINDOWS\\SMINST\\Scheduler.exe"=
"c:\\Program Files\\Pinnacle\\Studio 11\\programs\\RM.exe"=
"c:\\Program Files\\Pinnacle\\Studio 11\\programs\\Studio.exe"=
"c:\\Program Files\\Pinnacle\\Studio 11\\programs\\PMSRegisterFile.exe"=
"c:\\Program Files\\Pinnacle\\Studio 11\\programs\\umi.exe"=
"%windir%\\Network Diagnostic\\xpnetdiag.exe"=
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R1 BdRawPr;BdRawPr;c:\windows\system32\drivers\bdrawpr.sys [13/04/2011 13:09 12960]
R2 pdfcDispatcher;PDF Document Manager;c:\program files\PDF Complete\pdfsvc.exe [27/02/2008 07:29 540184]
R2 Updatesrv;BitDefender Desktop Update Service;c:\program files\BitDefender\BitDefender 2011\updatesrv.exe [11/10/2010 19:34 43936]
R3 BDFM;BDFM;c:\windows\system32\drivers\bdfm.sys [22/04/2010 13:19 149520]
R3 Bdfndisf;BitDefender Firewall NDIS Filter Service;c:\program files\Fichiers communs\BitDefender\BitDefender Firewall\bdfndisf.sys [20/08/2010 15:41 111696]
S0 Lbd;Lbd;c:\windows\system32\DRIVERS\Lbd.sys --> c:\windows\system32\DRIVERS\Lbd.sys [?]
S2 gupdate1ca172b170399e8;Service Google Update (gupdate1ca172b170399e8);c:\program files\Google\Update\GoogleUpdate.exe [07/08/2009 08:48 133104]
S3 fbxusb;Carte réseau virtuelle FreeBox USB;c:\windows\system32\drivers\fbxusb32.sys [20/10/2004 14:23 21344]
S3 gupdatem;Service Google Update (gupdatem);c:\program files\Google\Update\GoogleUpdate.exe [07/08/2009 08:48 133104]
S3 Update Server;BitDefender Update Server v2;c:\program files\Fichiers communs\BitDefender\BitDefender Arrakis Server\bin\arrakis3.exe [11/10/2010 19:26 307544]
S4 avc3;avc3;c:\windows\system32\drivers\avc3.sys [28/06/2010 12:55 633424]
S4 avckf;avckf;c:\windows\system32\drivers\avckf.sys [28/06/2010 12:55 970320]
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[HKEY_LOCAL_MACHINE\software\microsoft\active setup\installed components\{10880D85-AAD9-4558-ABDC-2AB1552D831F}]
2007-11-19 12:47 451872 ----a-w- c:\program files\Fichiers communs\LightScribe\LSRunOnce.exe
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Contenu du dossier 'Tâches planifiées'
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2011-05-04 c:\windows\Tasks\GoogleUpdateTaskMachineCore.job
- c:\program files\Google\Update\GoogleUpdate.exe [2009-08-07 06:48]
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2011-05-04 c:\windows\Tasks\GoogleUpdateTaskMachineUA.job
- c:\program files\Google\Update\GoogleUpdate.exe [2009-08-07 06:48]
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2011-05-04 c:\windows\Tasks\User_Feed_Synchronization-{E472CC8C-AC60-4954-9406-4566769D3436}.job
- c:\windows\system32\msfeedssync.exe [2007-08-13 03:31]
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------- Examen supplémentaire -------
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uStart Page = hxxp://www.google.fr/
uDefault_Search_URL = hxxp://www.google.com/ie
uSearchMigratedDefaultURL = hxxp://www.google.com/search?q={searchTerms}&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8
uSearchAssistant = hxxp://www.google.com/ie
uSearchURL,(Default) = hxxp://www.google.com/search?q=%s
IE: Add to Google Photos Screensa&ver - c:\windows\system32\GPhotos.scr/200
IE: E&xporter vers Microsoft Excel - c:\progra~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
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- - - - ORPHELINS SUPPRIMES - - - -
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HKCU-Run-RegistryBooster - c:\program files\Uniblue\RegistryBooster\launcher.exe
SafeBoot-WudfPf
SafeBoot-WudfRd
MSConfigStartUp-swg - c:\program files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
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**************************************************************************
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catchme 0.3.1398 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, http://www.gmer.net
Rootkit scan 2011-05-04 14:08
Windows 5.1.2600 Service Pack 3 NTFS
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Recherche de processus cachés ...
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Recherche d'éléments en démarrage automatique cachés ...
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Recherche de fichiers cachés ...
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Scan terminé avec succès
Fichiers cachés: 0
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**************************************************************************
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[HKEY_LOCAL_MACHINE\System\ControlSet001\Services\pdfcDispatcher]
"ImagePath"="c:\program files\PDF Complete\pdfsvc.exe /startedbyscm:66B66708-40E2BE4D-pdfcService"
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--------------------- CLES DE REGISTRE BLOQUEES ---------------------
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[HKEY_USERS\S-1-5-21-2360674256-304305307-711408998-500\Software\Microsoft\Internet Explorer\User Preferences]
@Denied: (2) (Administrator)
"88D7D0879DAB32E14DE5B3A805A34F98AFF34F5977"=hex:01,00,00,00,d0,8c,9d,df,01,15,
d1,11,8c,7a,00,c0,4f,c2,97,eb,01,00,00,00,80,d5,00,7b,73,06,ff,43,af,ea,95,\
"2D53CFFC5C1A3DD2E97B7979AC2A92BD59BC839E81"=hex:01,00,00,00,d0,8c,9d,df,01,15,
d1,11,8c,7a,00,c0,4f,c2,97,eb,01,00,00,00,80,d5,00,7b,73,06,ff,43,af,ea,95,\
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[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}]
@Denied: (A 2) (Everyone)
@="FlashBroker"
"LocalizedString"="@c:\\WINDOWS\\system32\\Macromed\\Flash\\FlashUtil10o_ActiveX.exe,-101"
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[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\Elevation]
"Enabled"=dword:00000001
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[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\LocalServer32]
@="c:\\WINDOWS\\system32\\Macromed\\Flash\\FlashUtil10o_ActiveX.exe"
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[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{A483C63A-CDBC-426E-BF93-872502E8144E}\TypeLib]
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}"
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[HKEY_LOCAL_MACHINE\software\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}]
@Denied: (A 2) (Everyone)
@="IFlashBroker4"
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[HKEY_LOCAL_MACHINE\software\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"
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[HKEY_LOCAL_MACHINE\software\Classes\Interface\{E3F2C3CB-5EB8-4A04-B22C-7E3B4B6AF30F}\TypeLib]
@="{FAB3E735-69C7-453B-A446-B6823C6DF1C9}"
"Version"="1.0"
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[HKEY_LOCAL_MACHINE\software\Microsoft\Windows\CurrentVersion\Installer\UserData\LocalSystem\Components\€-€|ÿÿÿÿÀ*€|ù*9~*]
"C040110900063D11C8EF10054038389C"="C?\\WINDOWS\\system32\\FM20ENU.DLL"
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--------------------- DLLs chargées dans les processus actifs ---------------------
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- - - - - - - > 'winlogon.exe'(928)
c:\windows\system32\Ati2evxx.dll
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- - - - - - - > 'explorer.exe'(3400)
c:\program files\BitDefender\BitDefender 2011\pchook32.dll
c:\windows\system32\webcheck.dll
c:\windows\system32\WPDShServiceObj.dll
c:\program files\Nokia\Nokia PC Suite 7\PhoneBrowser.dll
c:\program files\Nokia\Nokia PC Suite 7\NGSCM.DLL
c:\program files\Nokia\Nokia PC Suite 7\Lang\PhoneBrowser_fre.nlr
c:\program files\Nokia\Nokia PC Suite 7\Resource\PhoneBrowser_Nokia.ngr
c:\windows\system32\PortableDeviceTypes.dll
c:\windows\system32\PortableDeviceApi.dll
c:\windows\system32\eappprxy.dll
c:\program files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
c:\program files\Microsoft Office\OFFICE11\msohev.dll
c:\program files\Adobe\Acrobat 7.0\ActiveX\PDFShell.dll
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------------------------ Autres processus actifs ------------------------
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c:\windows\system32\Ati2evxx.exe
c:\windows\system32\Ati2evxx.exe
c:\program files\Fichiers communs\InterVideo\RegMgr\iviRegMgr.exe
c:\program files\Fichiers communs\LightScribe\LSSrvc.exe
c:\program files\Fichiers communs\Nokia\MPlatform\NokiaMServer.exe
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**************************************************************************
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Heure de fin: 2011-05-04 14:12:44 - La machine a redémarré
ComboFix-quarantined-files.txt 2011-05-04 12:12
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Avant-CF: 148 187 779 072 octets libres
Après-CF: 151 336 513 536 octets libres
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WindowsXP-KB310994-SP2-Pro-BootDisk-FRA.exe
[boot loader]
timeout=2
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
c:\cmdcons\BOOTSECT.DAT="Microsoft Windows Recovery Console" /cmdcons
UnsupportedDebug="do not select this" /debug
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professionnel" /noexecute=optin /fastdetect /usepmtimer
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- - End Of File - - 85468EE9879CDCF02F4D3C401A85C8FF

Merci de bien vouloir m'aider =D
a bientot