Trojan Patched.gen

Bonjour, depuis environ une semaine, j'ai un problème.

Un virus s'est apparemment introduit sur mon pc et m'empêche d'utiliser certains jeux.
Exemple : PES2009, je dispose d'un fichier nommé PES2009.exe et avira le détecte (même une fois que je l'ai supprimé puis remplacé par un autre) comme virus : Contient le cheval de Troie "TR/Patched.Gen".

j'ai fait un scan complet avec avira qui m'a détecté des virus, j'ai fais "tout réparer", mais rien à faire...

j'ai aussi fait un scan hijackthis si ça peut aider :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:13:13, on 04/10/2009
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18813)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Intel\Intel Matrix Storage Manager\IAAnotif.exe
C:\Program Files (x86)\LG Soft India\forteManager\bin\Monitor.exe
C:\Program Files (x86)\Ralink\Common\RaUI.exe
C:\Program Files (x86)\Hewlett-Packard\HP Odometer\hpsysdrv.exe
C:\Program Files (x86)\HP\HP Software Update\hpwuSchd2.exe
C:\Program Files (x86)\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\Java\jre6\bin\jusched.exe
C:\Program Files (x86)\iTunes\iTunesHelper.exe
C:\Program Files (x86)\DAEMON Tools Lite\daemon.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr?cobrand=hp-desktop.msn.com&ocid=HPDHP&pc=HPDTDF
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr?cobrand=hp-desktop.msn.com&ocid=HPDHP&pc=HPDTDF
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?cobrand=hp-desktop.msn.com&ocid=HPDHP&pc=HPDTDF
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 192.168.2.1:80
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: DAEMON Tools Toolbar - {32099AAC-C132-4136-9E9A-4E364A424E17} - C:\Program Files (x86)\DAEMON Tools Toolbar\DTToolbar.dll
O4 - HKLM\..\Run: [hpsysdrv] c:\program files (x86)\hewlett-packard\HP odometer\hpsysdrv.exe
O4 - HKLM\..\Run: [OsdMaestro] c:\Program Files\Hewlett-Packard\On-Screen OSD Indicator\OSD64.exe
O4 - HKLM\..\Run: [HP Health Check Scheduler] c:\Program Files (x86)\Hewlett-Packard\HP Health Check\HPHC_Scheduler.exe
O4 - HKLM\..\Run: [UpdateP2GoShortCut] "c:\Program Files (x86)\CyberLink\Power2Go\MUITransfer\MUIStartMenu.exe" "c:\Program Files (x86)\CyberLink\Power2Go" UpdateWithCreateOnce "SOFTWARE\CyberLink\Power2Go\6.0"
O4 - HKLM\..\Run: [UpdateLBPShortCut] "c:\Program Files (x86)\CyberLink\LabelPrint\MUITransfer\MUIStartMenu.exe" "c:\Program Files (x86)\CyberLink\LabelPrint" UpdateWithCreateOnce "Software\CyberLink\LabelPrint\2.5"
O4 - HKLM\..\Run: [UpdatePDIRShortCut] "c:\Program Files (x86)\CyberLink\PowerDirector\MUITransfer\MUIStartMenu.exe" "c:\Program Files (x86)\CyberLink\PowerDirector" UpdateWithCreateOnce "SOFTWARE\CyberLink\PowerDirector\7.0"
O4 - HKLM\..\Run: [UpdatePSTShortCut] "c:\Program Files (x86)\CyberLink\CyberLink DVD Suite Deluxe\MUITransfer\MUIStartMenu.exe" "c:\Program Files (x86)\CyberLink\CyberLink DVD Suite Deluxe" UpdateWithCreateOnce "Software\CyberLink\PowerStarter"
O4 - HKLM\..\Run: [TSMAgent] "c:\Program Files (x86)\Hewlett-Packard\TouchSmart\Media\TSMAgent.exe"
O4 - HKLM\..\Run: [CLMLServer for HP TouchSmart] "c:\Program Files (x86)\Hewlett-Packard\TouchSmart\Media\Kernel\CLML\CLMLSvc.exe"
O4 - HKLM\..\Run: [HP Software Update] c:\Program Files (x86)\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files (x86)\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [TVAgent] "C:\Program Files (x86)\Hewlett-Packard\Media\TV\TVAgent.exe"
O4 - HKLM\..\Run: [DVDAgent] "C:\Program Files (x86)\Hewlett-Packard\Media\DVD\DVDAgent.exe"
O4 - HKLM\..\Run: [JMB36X IDE Setup] C:\Windows\RaidTool\xInsIDE.exe
O4 - HKLM\..\Run: [UnlockerAssistant] "C:\Program Files (x86)\Unlocker\UnlockerAssistant.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files (x86)\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files (x86)\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [HPAdvisor] C:\Program Files (x86)\Hewlett-Packard\HP Advisor\HPAdvisor.exe autorun=AUTORUN
O4 - HKCU\..\Run: [ISUSPM Startup] C:\PROGRA~2\COMMON~1\INSTAL~1\UPDATE~1\isuspm.exe -startup
O4 - HKCU\..\Run: [DAEMON Tools Lite] "C:\Program Files (x86)\DAEMON Tools Lite\daemon.exe" -autorun
O4 - HKCU\..\Run: [RGSC] C:\Program Files (x86)\Jeux\Rockstar Games\Rockstar Games Social Club\RGSCLauncher.exe /silent
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Steam] "C:\Program Files (x86)\Steam\Steam.exe" -silent
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files (x86)\Windows Media Player\WMPNSCFG.exe
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O4 - Global Startup: forteManager.lnk = ?
O4 - Global Startup: Ralink Wireless Utility.lnk = C:\Program Files (x86)\Ralink\Common\RaUI.exe
O13 - Gopher Prefix:
O16 - DPF: {1E54D648-B804-468d-BC78-4AFFED8E262F} (System Requirements Lab) - https://www.nvidia.com/content/DriverDownload/srl/3.0.0.4/srl_bin/sysreqlab_nvd.cab
O16 - DPF: {73ECB3AA-4717-450C-A2AB-D00DAD9EE203} (GMNRev Class) - http://h20270.www2.hp.com/ediags/gmn2/install/HPProductDetection2.cab
O16 - DPF: {74DBCB52-F298-4110-951D-AD2FF67BC8AB} (NVIDIA Smart Scan) - https://www.nvidia.com/content/DriverDownload/nforce/NvidiaSmartScan.cab
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Avira AntiVir Planificateur (AntiVirSchedulerService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files (x86)\Bonjour\mDNSResponder.exe
O23 - Service: COMODO Internet Security Helper Service (cmdAgent) - COMODO - C:\Program Files\COMODO\COMODO Internet Security\cmdagent.exe
O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)
O23 - Service: GameConsoleService - WildTangent, Inc. - C:\Program Files (x86)\HP Games\My HP Game Console\GameConsoleService.exe
O23 - Service: HP Health Check Service - Hewlett-Packard - c:\Program Files (x86)\Hewlett-Packard\HP Health Check\hphc_service.exe
O23 - Service: HP Easy Backup Button Service (HPBtnSrv) - Unknown owner - C:\Program Files (x86)\Hewlett-Packard\HP Easy Backup\HPBtnSrv.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files (x86)\Intel\Intel Matrix Storage Manager\IAANTMon.exe
O23 - Service: Service de l’iPod (iPod Service) - Apple Inc. - C:\Program Files (x86)\iPod\bin\iPodService.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files (x86)\Common Files\LightScribe\LSSrvc.exe
O23 - Service: Ma-Config Service (maconfservice) - CybelSoft - C:\Program Files (x86)\ma-config.com\maconfservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: Nero BackItUp Scheduler 4.0 - Unknown owner - C:\Program Files (x86)\Common Files\Nero\Nero BackItUp 4\NBService.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Ralink Registry Writer (RalinkRegistryWriter) - Ralink Technology, Corp. - C:\Program Files (x86)\Ralink\Common\RalinkRegistryWriter.exe
O23 - Service: Ralink Registry Writer 64 (RalinkRegistryWriter64) - Ralink Technology, Corp. - C:\Program Files (x86)\Ralink\Common\RalinkRegistryWriter64.exe
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files (x86)\Common Files\Steam\SteamService.exe
O23 - Service: NVIDIA Stereoscopic 3D Driver Service (Stereo Service) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPISvr.exe
O23 - Service: TV Background Capture Service (TVBCS) (TVCapSvc) - Unknown owner - C:\Program Files (x86)\Hewlett-Packard\Media\TV\Kernel\TV\TVCapSvc.exe
O23 - Service: TV Task Scheduler (TVTS) (TVSched) - Unknown owner - C:\Program Files (x86)\Hewlett-Packard\Media\TV\Kernel\TV\TVSched.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)