Connexion internet impossible

Bonjour,

Bonjour

je n'ai plus d'accès à internet depuis hier apres midi (je suis sur mon pc du boulot)
J'ai passer avg et spybot (sans les mise a jour car pas de connexions)et rien

avast a detecté un trojan (me rappel plus le le nom) par la protection residente mis en quarantaine mais le probleme persiste

QUE FAIRE ??? Merci de vos lumières !

mon log hijackthis :
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\brsvc01a.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\brss01a.exe
C:\Program Files\Fichiers communs\Panda Software\PavShld\pavprsrv.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Webroot\Washer\WasherSvc.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\System32\qttask.exe
C:\Program Files\D-Tools\daemon.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Siber Systems\AI RoboForm\RoboFormWatcher.exe
C:\Program Files\Trust\DS-3100A Wireless Optical Deskset\Keyboard\kbdap32a.EXE
C:\Program Files\Trust\DS-3100A Wireless Optical Deskset\Mouse\mouse32a.exe
C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe
C:\Program Files\Brother\ControlCenter2\brctrcen.exe
C:\Program Files\D-Link\AirPlus G\AirGCFG.exe
C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Webroot\Washer\wwDisp.exe
C:\Program Files\Brother\Brmfcmon\BrMfcWnd.exe
C:\Program Files\Brother\Brmfcmon\BrMfcmon.exe
C:\Program Files\Folding@Home\winFAH.exe
C:\Program Files\OpenOffice.org1.1.4\program\soffice.exe
C:\Program Files\Folding@Home\FahCore_82.exe
C:\Documents and Settings\Lalonde Mickael\Bureau\nettoyage\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.ustart.org
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: e-Carte Bleue Browser Helper Object - {2E03C0FD-4C48-43A7-9A54-00240C70FF16} - C:\WINDOWS\System32\BhoECart.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {724d43a9-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O3 - Toolbar: &RoboForm - {724d43a0-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\MSDXM.OCX
O4 - HKLM\..\Run: [QuickTime Task] C:\WINDOWS\System32\qttask.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Program Files\D-Tools\daemon.exe" -lang 1036
O4 - HKLM\..\Run: [APVXDWIN] "C:\Program Files\Panda Software\Panda Titanium Antivirus 2004\APVXDWIN.EXE" /s
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [ATIPTA] "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [RoboForm] "C:\Program Files\Siber Systems\AI RoboForm\RoboFormWatcher.exe"
O4 - HKLM\..\Run: [OFFICEKB] C:\Program Files\Trust\DS-3100A Wireless Optical Deskset\Keyboard\kbdap32a.EXE
O4 - HKLM\..\Run: [FLMOFFICE4DMOUSE] C:\Program Files\Trust\DS-3100A Wireless Optical Deskset\Mouse\mouse32a.exe
O4 - HKLM\..\Run: [SSBkgdUpdate] "C:\Program Files\Fichiers communs\Scansoft Shared\SSBkgdUpdate\SSBkgdupdate.exe" -Embedding -boot
O4 - HKLM\..\Run: [PaperPort PTD] C:\Program Files\ScanSoft\PaperPort\pptd40nt.exe
O4 - HKLM\..\Run: [IndexSearch] C:\Program Files\ScanSoft\PaperPort\IndexSearch.exe
O4 - HKLM\..\Run: [ControlCenter2.0] C:\Program Files\Brother\ControlCenter2\brctrcen.exe /autorun
O4 - HKLM\..\Run: [D-Link AirPlus G] C:\Program Files\D-Link\AirPlus G\AirGCFG.exe
O4 - HKLM\..\Run: [ANIWZCS2Service] C:\Program Files\ANI\ANIWZCS2 Service\WZCSLDR2.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [Window Washer] "C:\Program Files\Webroot\Washer\wwDisp.exe"
O4 - HKCU\..\Run: [scheduler_monitor] C:\Program Files\ReaConverter 5.0 Pro\init_scheduler.exe
O4 - Startup: Folding@home 4.00.lnk = ?
O4 - Startup: OpenOffice.org 1.1.4.lnk = C:\Program Files\OpenOffice.org1.1.4\program\quickstart.exe
O4 - Global Startup: Contrôleur d’état.lnk = C:\Program Files\Brother\Brmfcmon\BrMfcWnd.exe
O8 - Extra context menu item: &2 Customize Menu - res://C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll/ComCustomIEMenu.html
O8 - Extra context menu item: &7 Fill Forms - res://C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll/ComFillForms.html
O8 - Extra context menu item: &8 Save Forms - res://C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll/ComSavePass.html
O8 - Extra context menu item: Recherche sur eBay - res://C:\Program Files\eBay\eBay Toolbar2\eBayTb.dll/RCSearch.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: Fill Forms - {320AF880-6646-11D3-ABEE-C5DBF3571F46} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &7 Fill Forms - {320AF880-6646-11D3-ABEE-C5DBF3571F46} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Fill Id - {320AF880-6646-11D3-ABEE-C5DBF3571F47} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &5 Fill from Identity - {320AF880-6646-11D3-ABEE-C5DBF3571F47} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Fill Pass - {320AF880-6646-11D3-ABEE-C5DBF3571F48} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &6 Fill from Passcard - {320AF880-6646-11D3-ABEE-C5DBF3571F48} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Save Forms - {320AF880-6646-11D3-ABEE-C5DBF3571F49} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &8 Save Forms - {320AF880-6646-11D3-ABEE-C5DBF3571F49} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Go Fill - {320AF880-6646-11D3-ABEE-C5DBF3571F4A} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &Go && Fill from Passcard - {320AF880-6646-11D3-ABEE-C5DBF3571F4A} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Login - {320AF880-6646-11D3-ABEE-C5DBF3571F4B} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &Login (Go, Fill, Submit) - {320AF880-6646-11D3-ABEE-C5DBF3571F4B} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Options - {320AF880-6646-11D3-ABEE-C5DBF3571F4C} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &Options - {320AF880-6646-11D3-ABEE-C5DBF3571F4C} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra button: Identities - {45DB34C3-955C-11D3-ABEF-444553540000} - C:\Program Files\Siber Systems\AI RoboForm\Identities.exe
O9 - Extra 'Tools' menuitem: &3 Edit Identities - {45DB34C3-955C-11D3-ABEF-444553540000} - C:\Program Files\Siber Systems\AI RoboForm\Identities.exe
O9 - Extra button: Passcards - {45DB34C3-955C-11D3-ABEF-444553540001} - C:\Program Files\Siber Systems\AI RoboForm\Passcards.exe
O9 - Extra 'Tools' menuitem: &4 Edit Passcards - {45DB34C3-955C-11D3-ABEF-444553540001} - C:\Program Files\Siber Systems\AI RoboForm\Passcards.exe
O9 - Extra button: RF toolbar - {724d43aa-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O9 - Extra 'Tools' menuitem: &9 Robo Toolbar - {724d43aa-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
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: {1F83CD9E-505E-4F87-BECE-0832A763E36F} - http://www.mypixmania.com/fr/fr/importer/MypixUploader.cab
O16 - DPF: {4C39376E-FA9D-4349-BACC-D305C1750EF3} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/activex/EPUWALControl_v1-0-3-17.cab
O16 - DPF: {6E5E167B-1566-4316-B27F-0DDAB3484CF7} (Image Uploader Control) - http://www.new2.foto.com/ImageUploader4.cab
O16 - DPF: {B79A53C0-1DAC-4636-BACE-FD086A7A79BF} (AdSignerLCContrl Class) - https://static.impots.gouv.fr/tdir/static/adpform/AdSignerADP-1.1.cab
O16 - DPF: {C4925E65-7A1E-11D2-8BB4-00A0C9CC72C3} (Virtools WebPlayer Class) - http://a532.g.akamai.net/...
O16 - DPF: {D8089245-3211-40F6-819B-9E5E92CD61A2} (FlashXControl Object) - https://signin3.valueactive.com/Register/Branding/olr3313/OCX/v1018/flashax.cab
O16 - DPF: {DEB21AD3-FDA4-42F6-B57D-EE696A675EE8} (IPSUploader Control) - http://asp07.photoprintit.de/microsite/12188/defaults/activex/IPSUploader.cab
O16 - DPF: {F7EDBBEA-1AD2-4EBF-AA07-D453CC29EE65} (Flash Casino Helper Object) - https://bellerock.microgaming.com/freeplay/FlashAX2.cab
O20 - Winlogon Notify: WRNotifier - WRLogonNTF.dll (file missing)
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Alpha Networks Inc. - C:\Program Files\ANI\ANIWZCS2 Service\ANIWZCSdS.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - C:\WINDOWS\System32\brsvc01a.exe
O23 - Service: ewido anti-spyware 4.0 guard - Anti-Malware Development a.s. - C:\Program Files\ewido anti-spyware 4.0\guard.exe
O23 - Service: Panda Process Protection Service (PavPrSrv) - Panda Software - C:\Program Files\Fichiers communs\Panda Software\PavShld\pavprsrv.exe
O23 - Service: Panda anti-virus service (PAVSRV) - Unknown owner - C:\Program Files\Panda Software\Panda Titanium Antivirus 2004\pavsrv51.exe (file missing)
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: Panda IManager Service (PSIMSVC) - Unknown owner - C:\Program Files\Panda Software\Panda Titanium Antivirus 2004\PsImSvc.exe (file missing)
O23 - Service: ReaConverter scheduler service (rcp_service) - ReaSoft - C:\Program Files\ReaConverter 5.0 Pro\rcp_scheduler.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Window Washer Engine (wwEngineSvc) - Webroot Software, Inc. - C:\Program Files\Webroot\Washer\WasherSvc.exe