Probléme erreur système de fichiers

il faut forcer la désactivation de L'UAC qui est perturbé par un agent malveillant (certainement).

pour ça, redémarre ton pc en mode sans échec, ensuite tu taperas "regedit" dans le menu rechercher de Windows, pour y rentrer ensuite.
retrouve cette clé:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
dedans, tu retrouves une valeur nommée EnableLUA, il faut la modifier, pour la mettre à 0.

puis redémarres, ça n'éradiquera pas le problème de fond mais cela te permettra de désinstaller ou installer des programmes.

ensuite, tu effaceras la totalité des cookies et caches de ton navigateur

puis, télécharges malwarebytes anti malware ( recherche google), gratuit, fait une mise à jour du logiciel tout d'abord, puis fait un scan complet de ta machine.

élimines les vers, si il y en a.

tu téléchargeras par la suite Hijackthis, qui permettras de voir les composants ajoutés à ton navigateur et à ton système, tu posteras le rapport dans ta prochaine réponse, puis en fonction de ce que je vois je te redirigerai ou non dans le forum Virus et sécurité.

ta situation ressemble clairement à une infection en masse pour moi ( des incohérences nombreuses qui n'ont pas de liens entre elles), mais d'autres problèmes peuvent s'y ajouter, d'où une vérification nécessaire.

Merci pour ta réponse

Malwarebytes a trouvé et supprimé 2 trojans et voilà le rapport Hijackthis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:13:19, on 24/07/2010
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18928)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\SYSTEM32\taskeng.exe
C:\Program Files\ASUS\ASUS Live Update\ALU.exe
C:\Windows\Explorer.EXE
C:\Program Files\ASUS\SmartLogon\sensorsrv.exe
C:\Program Files\ASUS\Net4Switch\Net4Switch.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\CyberLink\Power2Go\CLMLSvc.exe
C:\Program Files\ATK Hotkey\HControlUser.exe
C:\Program Files\ASUS\ATKOSD2\ATKOSD2.exe
C:\Windows\RtHDVCpl.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\ASUS\ASUS Data Security Manager\ADSMTray.exe
C:\Program Files\ASUS\ATK Media\DMedia.exe
C:\Windows\System32\ASUSTPE.exe
C:\Windows\ASScrPro.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Common Files\Research In Motion\Auto Update\RIMAutoUpdate.exe
C:\Program Files\Logitech\SetPointP\SetPoint.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Common Files\LightScribe\LightScribeControlPanel.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\Common Files\InstallShield\UpdateService\ISUSPM.exe
C:\Windows\ehome\ehmsas.exe
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\Scrybe\scrybe.exe
C:\Program Files\Microsoft Office\Office12\ONENOTEM.EXE
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Sunbelt Software\Personal Firewall\SbPFCl.exe
C:\Program Files\Common Files\LogiShrd\KHAL3\KHALMNPR.EXE
C:\Program Files\Logitech\SetPointG\SetPointII.exe
C:\Program Files\Synaptics\SynTP\SynTPHelper.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Windows\system32\wuauclt.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.google.fr/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.google.fr/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
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\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = https://www.google.fr/?gws_rd=ssl
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 =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Windows Live Family Safety Browser Helper - {4f3ed5cd-0726-42a9-87f5-d13f3d2976ac} - C:\Program Files\Windows Live\Family Safety\fssbho.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Program Files\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live ID - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\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\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Hotspot Shield Class - {F9E4A054-E9B1-4BC3-83A3-76A1AE736170} - C:\Program Files\Hotspot Shield\hssie\HssIE.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [CLMLServer] "C:\Program Files\CyberLink\Power2Go\CLMLSvc.exe"
O4 - HKLM\..\Run: [P2Go_Menu] "C:\Program Files\CyberLink\Power2Go\MUITransfer\MUIStartMenu.exe" "C:\Program Files\CyberLink\Power2Go" UpdateWithCreateOnce "SOFTWARE\CyberLink\Power2Go\6.0"
O4 - HKLM\..\Run: [HControlUser] "C:\Program Files\ATK Hotkey\HcontrolUser.exe"
O4 - HKLM\..\Run: [ATKOSD2] C:\Program Files\ASUS\ATKOSD2\ATKOSD2.exe
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [SynTPEnh] %ProgramFiles%\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [ADSMTray] C:\Program Files\ASUS\ASUS Data Security Manager\ADSMTray.exe
O4 - HKLM\..\Run: [ATKMEDIA] C:\Program Files\ASUS\ATK Media\DMedia.exe
O4 - HKLM\..\Run: [ASUSTPE] C:\Windows\system32\ASUSTPE.exe
O4 - HKLM\..\Run: [ASUS Camera ScreenSaver] C:\Windows\AsScrProlog.exe
O4 - HKLM\..\Run: [ASUS Screen Saver Protector] C:\Windows\ASScrPro.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [BlackBerryAutoUpdate] C:\Program Files\Common Files\Research In Motion\Auto Update\RIMAutoUpdate.exe /background
O4 - HKLM\..\Run: [RoxWatchTray] "C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxWatchTray9.exe"
O4 - HKLM\..\Run: [AdobeCS4ServiceManager] "C:\Program Files\Common Files\Adobe\CS4ServiceManager\CS4ServiceManager.exe" -launchedbylogin
O4 - HKLM\..\Run: [EvtMgr6] C:\Program Files\Logitech\SetPointP\SetPoint.exe /launchGaming
O4 - HKLM\..\Run: [SSBkgdUpdate] "C:\Program Files\Common Files\Scansoft Shared\SSBkgdUpdate\SSBkgdupdate.exe" -Embedding -boot
O4 - HKLM\..\Run: [DNS7reminder] "C:\Program Files\Nuance\NaturallySpeaking9\Ereg\Ereg.exe" -r "C:\ProgramData\Nuance\NaturallySpeaking9\Ereg.ini
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [LightScribe Control Panel] C:\Program Files\Common Files\LightScribe\LightScribeControlPanel.exe -hidden
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [ISUSPM] "C:\Program Files\Common Files\InstallShield\UpdateService\ISUSPM.exe" -scheduler
O4 - HKCU\..\Run: [Steam] "C:\Program Files\Steam2\Steam.exe" -silent
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 - Startup: OneNote 2007 Screen Clipper and Launcher.lnk = C:\Program Files\Microsoft Office\Office12\ONENOTEM.EXE
O4 - Global Startup: BumpTop.lnk = C:\Program Files\BumpTop\BumpTop.exe
O4 - Global Startup: Scrybe.lnk = ?
O8 - Extra context menu item: &Recherche AOL Toolbar - res://C:\Program Files\AOL Toolbar\toolbar.dll/SEARCH.HTML
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\Windows\system32\GPhotos.scr/200
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_96D6FF0C6D236BF8.dll/cmsidewiki.html
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
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\Windows\system32\Shdocvw.dll
O13 - Gopher Prefix:
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Program Files\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O23 - Service: ADSM Service (ADSMService) - ASUSTek Computer Inc. - C:\Program Files\ASUS\ASUS Data Security Manager\ADSMSrv.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: ASLDR Service (ASLDRService) - Unknown owner - C:\Program Files\ATK Hotkey\ASLDRSrv.exe
O23 - Service: ATKGFNEX Service (ATKGFNEXSrv) - Unknown owner - C:\Program Files\ATKGFNEX\GFNEXSrv.exe
O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - 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: Hotspot Shield Service (HotspotShieldService) - Unknown owner - C:\Program Files\Hotspot Shield\bin\openvpnas.exe
O23 - Service: Hotspot Shield Helper Service (HssSrv) - AnchorFree Inc. - C:\Program Files\Hotspot Shield\HssWPR\hsssrv.exe
O23 - Service: Hotspot Shield Tray Service (HssTrayService) - Unknown owner - C:\Program Files\Hotspot Shield\bin\HssTrayService.EXE
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\LogiShrd\Bluetooth\lbtserv.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: mental ray 3.7 Satellite for Autodesk 3ds Max 2010 32-bit 32-bit (mi-raysat_3dsmax2010_32) - Unknown owner - C:\Program Files\Autodesk\3ds Max 2010\mentalray\satellite\raysat_3dsmax2010_32server.exe
O23 - Service: Norton Internet Security - Unknown owner - C:\Program Files\Norton Internet Security\Engine\16.0.0.125\ccSvcHst.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: Roxio UPnP Renderer 9 - Sonic Solutions - C:\Program Files\Roxio\Digital Home 9\RoxioUPnPRenderer9.exe
O23 - Service: Roxio Upnp Server 9 - Sonic Solutions - C:\Program Files\Roxio\Digital Home 9\RoxioUpnpService9.exe
O23 - Service: LiveShare P2P Server 9 (RoxLiveShare9) - Sonic Solutions - C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxLiveShare9.exe
O23 - Service: RoxMediaDB9 - Sonic Solutions - C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxMediaDB9.exe
O23 - Service: Roxio Hard Drive Watcher 9 (RoxWatch9) - Sonic Solutions - C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxWatch9.exe
O23 - Service: Remote Procedure Call (RPC) Net (rpcnet) - Absolute Software Corp. - C:\Windows\SYSTEM32\rpcnet.exe
O23 - Service: SbPF.Launcher - Sunbelt Software, Inc. - C:\Program Files\Sunbelt Software\Personal Firewall\SbPFLnch.exe
O23 - Service: Scrybe Updater (ScrybeUpdater) - Synaptics, Inc. - C:\Program Files\Scrybe\Service\ScrybeUpdater.exe
O23 - Service: Sunbelt Personal Firewall 4 (SPF4) - Sunbelt Software, Inc. - C:\Program Files\Sunbelt Software\Personal Firewall\SbPFSvc.exe
O23 - Service: spmgr - Unknown owner - C:\Program Files\ASUS\NB Probe\SPM\spmgr.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe