Panneau de config introuvable.

Bonjour,

petits soucis depuis quelques jours qui ne cessent de s'aggraver.
Tout a commencé avec une alerte d'Avast m'annonçant la présence de Win32/Renos.
J'ai mis à jour l'antivirus et depuis, au lancement d'un certain nombre d'applications (notepad.exe, quand j'allume l'imprimante, quand j'ouvre Photoshop....) Avast m'ouvre des fenêtres d'alerte, et même en cliquant sur "ne rien faire" j'ai l'impression que des fichiers sont effacés !?

J'ai essayé Malwarebyte et Spybot mais rien ne change. Je ne peux même plus accéder au panneau de config ni lancer une restauration (en plus la restauration n'est apparemment plus activée....).
En mode sans échec, même pb pour le panneau de config ( "application introuvable" pour explorer.exe)
Avast m'a isolé dllhost.exe m'indiquant qu'il est vérolé....

Voilà, je coince sérieusement, j'ai l'impression que le gros chantier date principalement de la màj de l'antivirus, mais faute de pouvoir restaurer......... je vous poste le rapport d'Hijackthis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:43:38, on 07/07/2009
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18248)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxWatchTray9.exe
C:\Program Files\Logitech\Gaming Software\LWEMon.exe
C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Program Files\Western Digital\WD Drive Manager\WDBtnMgrUI.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Windows\ld12.exe
C:\Program Files\Alwil Software\Avast4\ashDisp.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\MP4 Player\Mp4Player.exe
C:\Program Files\Steam\steam.exe
C:\Program Files\ATI Technologies\HydraVision\HydraDM.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Windows\ehome\ehmsas.exe
C:\Program Files\Common Files\Logishrd\KHAL2\KHALMNPR.EXE
C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\CPSHelpRunner.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Windows\system32\wuauclt.exe
C:\Users\Vince\Downloads\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://defaulthomepage.info/
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.hugedomains.com/domain_profile.cfm?d=cooxer&e=com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: (no name) - {D76AB2A1-00F3-42BD-F434-00BBC39C8953} - (no file)
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [RoxWatchTray] "C:\Program Files\Common Files\Roxio Shared\9.0\SharedCOM\RoxWatchTray9.exe"
O4 - HKLM\..\Run: [toolbar_eula_launcher] C:\Program Files\Packard Bell\GOOGLE_EULA\EULALauncher.exe
O4 - HKLM\..\Run: [Kernel and Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [Start WingMan Profiler] C:\Program Files\Logitech\Gaming Software\LWEMon.exe /noui
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [LanguageShortcut] "C:\Program Files\CyberLink\PowerDVD\Language\Language.exe"
O4 - HKLM\..\Run: [WD Drive Manager] C:\Program Files\Western Digital\WD Drive Manager\WDBtnMgrUI.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Windows\system32\NeroCheck.exe
O4 - HKLM\..\Run: [TrayServer] C:\Program Files\MAGIX\Video_deluxe_2008_PLUS\TrayServer.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [sysldtray] c:\windows\ld12.exe
O4 - HKLM\..\Run: [a\dfkjfh387rhjdfnjd] C:\Windows\system32\svvchost.exe
O4 - HKLM\..\Run: [pp] c:\windows\pp10.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [MP4 Player] "C:\Program Files\MP4 Player\mp4Player.exe" hmw
O4 - HKCU\..\Run: [NVIDIA nTune] "C:\Program Files\NVIDIA Corporation\nTune\nTuneCmd.exe" clear
O4 - HKCU\..\Run: [Steam] "c:\program files\steam\steam.exe" -silent
O4 - HKCU\..\Run: [HydraVisionDesktopManager] "C:\Program Files\ATI Technologies\HydraVision\HydraDM.exe"
O4 - HKCU\..\Run: [cdoosoft] C:\Windows\system32\olhrwef.exe
O4 - HKUS\S-1-5-18\..\Run: [] C:\Windows\TEMP\gagm1za.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\Run: [hsf7husjnfg98gi498aejhiugjkdg4] C:\Windows\TEMP\gagm1za.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [] C:\Windows\TEMP\gagm1za.exe (User 'Default user')
O4 - Global Startup: Adobe Gamma Loader.lnk = ?
O4 - Global Startup: Logitech SetPoint.lnk = C:\Program Files\Logitech\SetPoint\SetPoint.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: OFFICE One Startup v7.lnk = ?
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\Windows\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\Windows\bdoscandel.exe
O13 - Gopher Prefix:
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O16 - DPF: {D4323BF2-006A-4440-A2F5-27E3E7AB25F8} (Virtools WebPlayer Class) - http://a532.g.akamai.net/...
O20 - AppInit_DLLs:
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - C:\Windows\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Firebird Server - MAGIX Instance (FirebirdServerMAGIXInstance) - MAGIX® - C:\Program Files\MAGIX\Common\Database\bin\fbserver.exe
O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.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: Planificateur LiveUpdate automatique - Unknown owner - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe (file missing)
O23 - Service: DiRT Drivers Auto Removal (pr2ah4nb) (pr2ah4nb) - CODEMASTERS - C:\Windows\system32\pr2ah4nb.exe
O23 - Service: DiRT Drivers Auto Removal (pr2ah4nc) (pr2ah4nc) - CODEMASTERS - C:\Windows\system32\pr2ah4nc.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: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe
O23 - Service: stllssvr - MicroVision Development, Inc. - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: UPnPService - Magix AG - C:\Program Files\Common Files\MAGIX Shared\UPnPService\UPnPService.exe
O23 - Service: WD Drive Manager Service (WDBtnMgrSvc.exe) - WDC - C:\Program Files\Western Digital\WD Drive Manager\WDBtnMgrSvc.exe