Lenteur extrème

Bonjour tous mon ordinateur est très lent je ne sais plus quoi faire aidez moi s'il vous plait


MERCI
voila

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:47:58, on 29/10/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
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:\Program Files\Microsoft Security Essentials\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Microsoft Security Essentials\msseces.exe
C:\Program Files\Analog Devices\SoundMAX\Smax4.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\PROGRA~1\MICROS~4\wcescomm.exe
C:\Program Files\RocketDock\RocketDock.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
F:\Program Files\Vista Rainbar\Rainmeter.exe
C:\PROGRA~1\MICROS~4\rapimgr.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\Skype\Plugin Manager\skypePM.exe
C:\WINDOWS\System32\wbem\wmiapsrv.exe
C:\Documents and Settings\tan_2\Mes documents\Ordinateur\Jeux\Steam\Steam.exe
C:\Documents and Settings\tan_2\Mes documents\Téléchargements\tan_2.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_clipbook.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
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
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = "C:\Program Files\Outlook Express\msimn.exe"
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: HP Print Enhancer - {0347C33E-8762-4905-BF09-768834316C61} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_printenhancer.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O4 - HKLM\..\Run: [MSSE] "C:\Program Files\Microsoft Security Essentials\msseces.exe" -hide
O4 - HKLM\..\Run: [SoundMax] "C:\Program Files\Analog Devices\SoundMAX\Smax4.exe" /tray
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [NiwradSoft Welcome] C:\WINDOWS\NiwradSoft Shell Pack\Tools\NS Welcome.exe
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\pchealth\helpctr\Binaries\MSCONFIG.EXE /auto
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\PROGRA~1\MICROS~4\wcescomm.exe"
O4 - HKCU\..\Run: [RocketDock] "C:\Program Files\RocketDock\RocketDock.exe"
O4 - HKCU\..\Run: [Vista Rainbar] F:\Program Files\Vista Rainbar\Vista Rainbar.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O9 - Extra button: Blog This - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Blog This in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra 'Tools' menuitem: Créer un Favori de l'appareil mobile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe
O9 - Extra button: Show or hide HP Smart Web Printing - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O16 - DPF: {867E13F2-7F31-44FB-AC97-CD38E0DC46EF} - http://fichiers.touslesdrivers.com/maconfig/MaConfig_3_5_3_0.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs:
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe