Problème de connexion internet

Bonjour,

Voilà mon problème c'est que j'ai des soucis de connexion depuis un petit moment. On vient de m'offrir un ordinateur portable et l'antivirus qui était dessus était F-secure. Comme je ne le trouvais pas tres efficace je l'ai remplacé au bout de quelques jours par Antivir et j'ai installé A-squarred, j'ai scanné mon pc et j'ai trouvé des tonnes de problème dessus lié à un trojan en particulier TR/Trash.Gen' [trojan]. J'ai fait en sorte de supprimer tous les problèmes grace aux logiciels cité plus haut et ccleaner mais il semblerait que ma connexion se coupe régulièrement quand même.

Voici mon rapport Hijackthis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:33:16, on 16/09/2009
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\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\WLTRYSVC.EXE
C:\WINDOWS\System32\bcmwltry.exe
C:\Program Files\Tall Emu\Online Armor\OAcat.exe
C:\Program Files\Tall Emu\Online Armor\oasrv.exe
C:\WINDOWS\system32\spoolsv.exe
c:\program files\idt\dellxpm09b_6159v043\wdm\stacsv.exe
C:\WINDOWS\System32\SCardSvr.exe
C:\Program Files\Avira\AntiVir Desktop\sched.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\a-squared Anti-Malware\a2service.exe
C:\Program Files\Avira\AntiVir Desktop\avguard.exe
C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe
C:\Program Files\SOFTS DIVERS\BlueSoleil\BlueSoleilCS.exe
C:\Program Files\SOFTS DIVERS\BlueSoleil\BsMobileCS.exe
C:\Program Files\CodeMeter\Runtime\bin\CodeMeter.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\SOFTS 3D\Autodesk\3ds Max 2008\mentalray\satellite\raysat_3dsMax2008_32server.exe
C:\Program Files\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\IoctlSvc.exe
C:\WINDOWS\system32\PSIService.exe
C:\Program Files\SOFTS 3D\Autodesk\mrsat3.7.1-maya2009\bin\raysat2009server.exe
C:\Program Files\SOFTS DIVERS\TortoiseSVN\bin\TSVNCache.exe
C:\Program Files\SOFTS UTILS\Alcohol 120\StarWind\StarWindServiceAE.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\SOFTS UTILS\UPHClean\uphclean.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
C:\Program Files\SOFTS DIVERS\BlueSoleil\BtTray.exe
C:\Program Files\Microsoft Xbox 360 Accessories\XboxStat.exe
C:\Program Files\SOFTS DIVERS\BlueSoleil\BsHelpCS.exe
C:\Program Files\CodeMeter\Runtime\bin\CodeMeterCC.exe
C:\Program Files\IDT\WDM\sttray.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\iaanotif.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Program Files\DellTPad\Apoint.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\OA001Mon.exe
C:\WINDOWS\system32\WLTRAY.exe
C:\Program Files\DellTPad\ApMsgFwd.exe
C:\Program Files\DellTPad\Apntex.exe
C:\Program Files\Tall Emu\Online Armor\oaui.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\DellTPad\HidFind.exe
C:\Program Files\a-squared Anti-Malware\a2guard.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Tall Emu\Online Armor\OAhlp.exe
C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe
D:\Program Files\DAEMON Tools Lite\daemon.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Windows Media Player\wmplayer.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
D:\Program Files\CCleaner\CCleaner.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.isart.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.isart.fr/
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 Explorer\Main,Window Title = Windows Internet Explorer fourni par ISART Digital
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = :0
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: ContributeBHO Class - {074C1DC5-9320-4A9A-947D-C042949C6216} - C:\Program Files\Adobe\/Adobe Contribute CS3/contributeieplugin.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Adobe PDF Conversion Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.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
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Contribute Toolbar - {517BDDE4-E3A7-4570-B21E-2B52B6139FC7} - C:\Program Files\Adobe\/Adobe Contribute CS3/contributeieplugin.dll
O3 - Toolbar: DAEMON Tools Toolbar - {32099AAC-C132-4136-9E9A-4E364A424E17} - C:\Program Files\DAEMON Tools Toolbar\DTToolbar.dll
O4 - HKLM\..\Run: [BtTray] "C:\Program Files\SOFTS DIVERS\BlueSoleil\BtTray.exe"
O4 - HKLM\..\Run: [XboxStat] "C:\Program Files\Microsoft Xbox 360 Accessories\XboxStat.exe" silentrun
O4 - HKLM\..\Run: [CodeMeter] "C:\Program Files\CodeMeter\Runtime\bin\CodeMeterCC.exe"
O4 - HKLM\..\Run: [SysTrayApp] %ProgramFiles%\IDT\WDM\sttray.exe
O4 - HKLM\..\Run: [IAAnotif] C:\Program Files\Intel\Intel Matrix Storage Manager\iaanotif.exe
O4 - HKLM\..\Run: [Apoint] C:\Program Files\DellTPad\Apoint.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /installquiet
O4 - HKLM\..\Run: [NVHotkey] rundll32.exe nvHotkey.dll,Start
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [OA001Mon] C:\WINDOWS\OA001Mon.exe
O4 - HKLM\..\Run: [Broadcom Wireless Manager UI] C:\WINDOWS\system32\WLTRAY.exe
O4 - HKLM\..\Run: [ChangeTPMAuth] C:\Program Files\Wave Systems Corp\Common\ChangeTPMAuth.exe /T:NTRU12
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [@OnlineArmor GUI] "C:\Program Files\Tall Emu\Online Armor\oaui.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [a-squared] "C:\Program Files\a-squared Anti-Malware\a2guard.exe" /d=60
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\SOFTS VIDEO\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Malwarebytes Anti-Malware (reboot)] "C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe" /runcleanupscript
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [DAEMON Tools Lite] "D:\Program Files\DAEMON Tools Lite\daemon.exe" -autorun
O8 - Extra context menu item: Ajouter au fichier PDF existant - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convertir en Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convertir la cible du lien en Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convertir la cible du lien en un fichier PDF existant - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convertir la sélection en Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convertir la sélection en un fichier PDF existant - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convertir les liens sélectionnés en fichier Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Convertir les liens sélectionnés en un fichier PDF existant - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\SOFTSB~1\MICROS~1\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Envoyer via Bluetooth - C:\Program Files\SOFTS DIVERS\BlueSoleil\TransSend\IE\tsinfo.htm
O8 - Extra context menu item: Envoyer via message(&M)... - C:\Program Files\SOFTS DIVERS\BlueSoleil\TransSend\IE\tssms.htm
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\SOFTSB~1\MICROS~1\Office12\REFIEBAR.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
O10 - Broken Internet access because of LSP provider 'c:\program files\bonjour\mdnsnsp.dll' missing
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = isartdigital.com
O17 - HKLM\Software\..\Telephony: DomainName = isartdigital.com
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = isartdigital.com
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = isartdigital.com
O17 - HKLM\System\CS3\Services\Tcpip\Parameters: Domain = isartdigital.com
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\WINDOWS\system32\skype4com.dll
O23 - Service: a-squared Anti-Malware Service (a2AntiMalware) - Emsi Software GmbH - C:\Program Files\a-squared Anti-Malware\a2service.exe
O23 - Service: Adobe Version Cue CS3 {fr_FR} (Adobe Version Cue CS3) - Adobe Systems Incorporated - C:\Program Files\Fichiers communs\Adobe\Adobe Version Cue CS3\Server\bin\VersionCueCS3.exe
O23 - Service: Avira AntiVir Planificateur (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Autodesk Licensing Service - Autodesk - C:\Program Files\Fichiers communs\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: BlueSoleilCS - Unknown owner - C:\Program Files\SOFTS DIVERS\BlueSoleil\BlueSoleilCS.exe
O23 - Service: BsHelpCS - Unknown owner - C:\Program Files\SOFTS DIVERS\BlueSoleil\BsHelpCS.exe
O23 - Service: BsMobileCS - Unknown owner - C:\Program Files\SOFTS DIVERS\BlueSoleil\BsMobileCS.exe
O23 - Service: CodeMeter Runtime Server (CodeMeter.exe) - WIBU-SYSTEMS AG - C:\Program Files\CodeMeter\Runtime\bin\CodeMeter.exe
O23 - Service: Firebird Server - MAGIX Instance (FirebirdServerMAGIXInstance) - MAGIX® - D:\Common\Database\bin\fbserver.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Fichiers communs\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: mental ray 3.6 Satellite for Autodesk 3ds Max 2008 32-bit 32-bit (mi-raysat_3dsMax2008_32) - Unknown owner - C:\Program Files\SOFTS 3D\Autodesk\3ds Max 2008\mentalray\satellite\raysat_3dsMax2008_32server.exe
O23 - Service: Nero BackItUp Scheduler 3 - Nero AG - C:\Program Files\SOFTS UTILS\Nero\Nero8\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Fichiers communs\Nero\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Performance Driver Service - Unknown owner - C:\Program Files\NVIDIA Corporation\Performance Drivers\nvPDsvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Online Armor Helper Service (OAcat) - Tall Emu - C:\Program Files\Tall Emu\Online Armor\OAcat.exe
O23 - Service: PLFlash DeviceIoControl Service - Prolific Technology Inc. - C:\WINDOWS\system32\IoctlSvc.exe
O23 - Service: ProtexisLicensing - Unknown owner - C:\WINDOWS\system32\PSIService.exe
O23 - Service: PsExec (PSEXESVC) - Sysinternals - C:\WINDOWS\PSEXESVC.EXE
O23 - Service: mental ray Satellite 3.7.1 for Maya 2009 (32 bit) (RaySat2009Server) - Unknown owner - C:\Program Files\SOFTS 3D\Autodesk\mrsat3.7.1-maya2009\bin\raysat2009server.exe
O23 - Service: Audio Service (STacSV) - IDT, Inc. - c:\program files\idt\dellxpm09b_6159v043\wdm\stacsv.exe
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Program Files\SOFTS UTILS\Alcohol 120\StarWind\StarWindServiceAE.exe
O23 - Service: Online Armor (SvcOnlineArmor) - Tall Emu - C:\Program Files\Tall Emu\Online Armor\oasrv.exe
O23 - Service: Dell Wireless WLAN Tray Service (wltrysvc) - Unknown owner - C:\WINDOWS\System32\WLTRYSVC.EXE