Voila que je passe sous vista et ayant une bonne configuration(Intel celeron 3.20GHZ, 1500 MO de RAM, Carte graphique 256Mo...), mon UC est a 100% voila le raport Hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 21:04:23, on 26/10/2007
Platform: Unknown Windows (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16546)

Running processes:
D:\Windows\system32\Dwm.exe
D:\Windows\Explorer.EXE
D:\Program Files\Windows Defender\MSASCui.exe
D:\Program Files\iTunes\iTunesHelper.exe
D:\Program Files\Common Files\LogiShrd\LVCOMSER\LVComSer.exe
D:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
D:\Program Files\Common Files\LogiShrd\LComMgr\Communications_Helper.exe
D:\Windows\SOUNDMAN.EXE
D:\Windows\ehome\ehtray.exe
D:\Program Files\Windows Media Player\wmpnscfg.exe
D:\Windows\system32\taskeng.exe
D:\Windows\ehome\ehmsas.exe
D:\Program Files\Common Files\Logishrd\LQCVFX\COCIManager.exe
D:\Program Files\Internet Explorer\ieuser.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\Program Files\Common Files\Microsoft Shared\Windows Live\WLLoginProxy.exe
D:\Program Files\Windows Live\Messenger\msnmsgr.exe
D:\Windows\system32\conime.exe
D:\Windows\system32\Macromed\Flash\FlashUtil9d.exe
D:\Program Files\QuickZip4\QuickZip.exe
D:\Users\nabs\AppData\Local\Temp\QZTEMP\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://recherche.neuf.fr/ie/default.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://recherche.neuf.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/?v=msgrv75
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://recherche.neuf.fr/
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 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://recherche.neuf.fr/ie/default.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - D:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [PCSuiteTrayApplication] D:\PROGRA~1\Nokia\NOKIAP~1\LAUNCH~1.EXE -startup
O4 - HKLM\..\Run: [QuickTime Task] "D:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "D:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "D:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "D:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [LogitechCommunicationsManager] "D:\Program Files\Common Files\LogiShrd\LComMgr\Communications_Helper.exe"
O4 - HKLM\..\Run: [LogitechQuickCamRibbon] "D:\Program Files\Logitech\QuickCam\Quickcam.exe" /hide
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [Videora] D:\Program Files\Videora\Videora.exe -t
O4 - HKLM\..\Run: [avgnt] "D:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKCU\..\Run: [MsnMsgr] "D:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ehTray.exe] D:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [PcSync] D:\Program Files\Nokia\Nokia PC Suite 6\PcSync2.exe /NoDialog
O4 - HKCU\..\Run: [Steam] "D:\Program Files\Steam\Steam.exe" -silent
O4 - HKCU\..\Run: [WMPNSCFG] D:\Program Files\Windows Media Player\WMPNSCFG.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://D:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - D:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O10 - Unknown file in Winsock LSP: d:\windows\system32\nlaapi.dll
O10 - Unknown file in Winsock LSP: d:\windows\system32\napinsp.dll
O11 - Options group: [INTERNATIONAL] International*
O13 - Gopher Prefix:
O16 - DPF: {867E13F2-7F31-44FB-AC97-CD38E0DC46EF} (HardwareDetection Control) - http://fichiers.touslesdrivers.com [...] _0_4_9.cab
O16 - DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} (Java Runtime Environment 1.6.0) - http://javadl-esd.sun.com/update/1 [...] 586-jc.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - D:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - D:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - D:\PROGRA~1\WI1F86~1\MESSEN~1\MSGRAP~1.DLL
O18 - Filter hijack: text/xml - {807563E5-5146-11D5-A672-00B0D022E945} - D:\PROGRA~1\COMMON~1\MICROS~1\OFFICE12\MSOXMLMF.DLL
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - D:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: AntiVir PersonalEdition Classic Scheduler (AntiVirScheduler) - Avira GmbH - D:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - Avira GmbH - D:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Apple Mobile Device - Apple, Inc. - D:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ares Chatroom server (AresChatServer) - Ares Development Group - D:\Program Files\Ares\chatServer.exe
O23 - Service: @%SystemRoot%\ehome\ehstart.dll,-101 (ehstart) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - D:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LVCOMSer - Logitech Inc. - D:\Program Files\Common Files\LogiShrd\LVCOMSER\LVComSer.exe
O23 - Service: Process Monitor (LVPrcSrv) - Logitech Inc. - D:\Program Files\Common Files\LogiShrd\LVMVFM\LVPrcSrv.exe
O23 - Service: LVSrvLauncher - Logitech Inc. - D:\Program Files\Common Files\LogiShrd\SrvLnch\SrvLnch.exe
O23 - Service: @%SystemRoot%\system32\qwave.dll,-1 (QWAVE) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: @%SystemRoot%\system32\seclogon.dll,-7001 (seclogon) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: ServiceLayer - Nokia. - D:\Program Files\Common Files\PCSuite\Services\ServiceLayer.exe
O23 - Service: Steam Client Service - Valve Corporation - D:\Program Files\Common Files\Steam\SteamService.exe
O23 - Service: Windows Live Setup Service (WLSetupSvc) - Unknown owner - D:\Program Files\Windows Live\installer\WLSetupSvc.exe
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - %ProgramFiles%\Windows Media Player\wmpnetwk.exe (file missing)

AIDEZ MOI SVPPPPPPP

C'est quel processus qui monte ton uc a 100 % ?

Iexplorer.exe
msnmsgr.exe
explorer.exe
dwm.exe

J'en peut plus d'etre toujours à 100%

bonjour, ferme MSN

j'ai deja essayer, et meme quand je ferme je rame...

T'as essayer une reparation ? C'est survenu depuis quand ? (depuis le debut sous vista ou apres ...). C'es la somme des 4 processus qui fais 100% ou c'est aleatoire le processus qui fais 100 % ?