Connecté mais pas d'accès internet

Bonjour,

je sollicite votre aide pour le problème suivant : ayant depuis peu récupéré un pc portable hp compact sous vista, celui ci s'est mis subitement à ne plus vouloir se connecter à internet en wifi (connexion ok mais aucun des navigateur ne fonctionne)

j'ai effectué un ping et le résultat semble fonctionner

j'ai également lancé des recherche virus/spywares mais étant donné l'impossibilité d'accéder au net, ces logiciels ne sont plus voir pas du tout à jour donc les résultats ne sont pas concluant ou alors le logiciel ne peut même pas s'installer car il demande avant tout accès au serveur (spybot)

quelqu'un saurait d'où peut venir le problème ?

peut être en vous postant le résultat hijackhis cela vous indiquera certaines choses, en vous remerciant d'avance.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12:31:54, on 03/04/2012
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v9.00 (9.00.8112.16421)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\system32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Hp\HP Software Update\hpwuSchd2.exe
C:\Program Files\Hp\QuickPlay\QPService.exe
C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\QLBCTRL.exe
C:\Program Files\Hewlett-Packard\HP Wireless Assistant\HPWAMain.exe
C:\Program Files\Hewlett-Packard\HP Wireless Assistant\WiFiMsg.exe
C:\Windows\PixArt\Pac207\Monitor.exe
C:\Program Files\Controle Parental\bin\OPTGui.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Windows\System32\spool\drivers\w32x86\3\E_FATICEE.EXE
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\McAfee Security Scan\2.0.181\SSScheduler.exe
C:\Program Files\Hewlett-Packard\Shared\HpqToaster.exe
C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe
C:\Windows\system32\dfrgui.exe
C:\Windows\system32\cmd.exe
C:\Windows\system32\conime.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Windows\system32\SearchFilterHost.exe
C:\Program Files\Trend Micro\HijackThis\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://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=FR_FR&c=73&bd=PRESARIO&pf=laptop
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://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=FR_FR&c=73&bd=PRESARIO&pf=laptop
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://recherche.neuf.fr/ie/default.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\Program Files\OrangeHSS\SearchURLHook\SearchPageURL.dll
R3 - URLSearchHook: (no name) - {EEE6C35D-6118-11DC-9C72-001320C79847} - (no file)
O1 - Hosts: ::1 localhost
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.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\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.1.1309.3572\swg.dll
O2 - BHO: Bing Bar Helper - {d2ce3e00-f94a-4740-988e-03dc2f38c34f} - "C:\Program Files\Microsoft\BingBar\BingExt.dll" (file missing)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: (no name) - {EEE6C35B-6118-11DC-9C72-001320C79847} - (no file)
O3 - Toolbar: Bing Bar - {8dcb7100-df86-4384-8842-8fa844297b3f} - "C:\Program Files\Microsoft\BingBar\BingExt.dll" (file missing)
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [IgfxTray] C:\Windows\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\Windows\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\Windows\system32\igfxpers.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\Hp\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [QPService] "C:\Program Files\HP\QuickPlay\QPService.exe"
O4 - HKLM\..\Run: [QlbCtrl] %ProgramFiles%\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe /Start
O4 - HKLM\..\Run: [HP Health Check Scheduler] C:\Program Files\Hewlett-Packard\HP Health Check\HPHC_Scheduler.exe
O4 - HKLM\..\Run: [hpWirelessAssistant] %ProgramFiles%\Hewlett-Packard\HP Wireless Assistant\HPWAMain.exe
O4 - HKLM\..\Run: [WAWifiMessage] %ProgramFiles%\Hewlett-Packard\HP Wireless Assistant\WiFiMsg.exe
O4 - HKLM\..\Run: [Monitor] C:\Windows\PixArt\PAC207\Monitor.exe
O4 - HKLM\..\Run: [OPTENET_GUI] C:\PROGRA~1\CONTRO~1\bin\optgui.exe
O4 - HKLM\..\Run: [ORAHSSSessionManager] "C:\Program Files\OrangeHSS\SessionManager\SessionManager.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Program Files\Common Files\Apple\Mobile Device Support\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [COMODO] C:\Program Files\COMODO\COMODO GeekBuddy\CLPSLA.exe
O4 - HKLM\..\Run: [CPA] C:\Program Files\COMODO\COMODO GeekBuddy\VALA.exe
O4 - HKLM\..\Run: [COMODO Internet Security] "C:\Program Files\COMODO\COMODO Internet Security\cfp.exe" -h
O4 - HKLM\..\RunOnce: [Launcher] %WINDIR%\SMINST\launcher.exe
O4 - HKCU\..\Run: [EPSON Stylus DX8400 Series] C:\Windows\system32\spool\DRIVERS\W32X86\3\E_FATICEE.EXE /FU "C:\Windows\TEMP\E_SC32B.tmp" /EF "HKCU"
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\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: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O4 - Global Startup: McAfee Security Scan Plus.lnk = ?
O4 - Global Startup: WiFi Station pour Livebox.lnk = C:\Program Files\Hercules\WiFi Station pour Livebox\WiFiLB.exe
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O13 - Gopher Prefix:
O17 - HKLM\System\CCS\Services\Tcpip\..\{B1428609-1047-4B08-AE20-1F4E369DD862}: NameServer = 8.26.56.26,156.154.70.22
O17 - HKLM\System\CCS\Services\Tcpip\..\{D6D70CFA-C578-46C3-B097-2EFB08057C2B}: NameServer = 8.26.56.26,156.154.70.22
O20 - AppInit_DLLs: C:\Windows\system32\guard32.dll
O23 - Service: Avira Planificateur (AntiVirSchedulerService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira Protection temps réel (AntiVirService) - Avira Operations GmbH & Co. KG - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: COMODO livePCsupport Service (CLPSLS) - COMODO - C:\Program Files\COMODO\COMODO GeekBuddy\CLPSLS.exe
O23 - Service: COMODO Internet Security Helper Service (cmdAgent) - COMODO - C:\Program Files\COMODO\COMODO Internet Security\cmdagent.exe
O23 - Service: Com4Qlb - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\Com4Qlb.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom SA - C:\PROGRA~1\COMMON~1\France Telecom\Shared Modules\FTRTSVC\0\FTRTSVC.exe
O23 - Service: Service Google Update (gupdate1c9ffa6ad2d963e) (gupdate1c9ffa6ad2d963e) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: HP Health Check Service - Hewlett-Packard - C:\Program Files\Hewlett-Packard\HP Health Check\hphc_service.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\Windows\System32\LEXBCES.EXE
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: McAfee Security Scan Component Host Service (McComponentHostService) - McAfee, Inc. - C:\Program Files\McAfee Security Scan\2.0.181\McCHSvc.exe
O23 - Service: Orange Contrôle Parental (OPTENET_FILTER) - Orange - C:\Program Files\Controle Parental\bin\optproxy.exe
O23 - Service: RoxMediaDB9 - Sonic Solutions - C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxMediaDB9.exe
O23 - Service: stllssvr - MicroVision Development, Inc. - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: XAudioService - Conexant Systems, Inc. - C:\Windows\system32\DRIVERS\xaudio.exe