au secours!!!!

Voila je telecharge un fichier, avast me dis que c'est un cheval de troie mais impossible de le supprimer de le mettre en quarantaine bref impossible de faire quelque chose .Bon jusque là ça va mais voila je redemarre mon pc le lendemain et voila que sur ma session administrateur je n'ai plus de droits, avast ne pratique plus la protection résidente ainsi que AVG .Autre constatation je n'est plus que fermer la session dans le menu démarrer.
Ami expert je m'en remet à vous.

Logfile of HijackThis v1.99.1
Scan saved at 12:04:12, on 15/09/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16512)

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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
c:\APPS\Powercinema\Kernel\TV\CLCapSvc.exe
c:\APPS\HIDSERVICE\HIDSERVICE.exe
c:\APPS\Powercinema\Kernel\TV\CLSched.exe
C:\WINDOWS\Explorer.EXE
C:\APPS\RecordNow\RecordNow.exe
C:\Program Files\Alwil Software\Avast4\ashSimpl.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WLLoginProxy.exe
C:\Documents and Settings\baptiste\Mes documents\Mes fichiers reçus\avgas-setup-7.5.1.43.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\MSN Messenger\livecall.exe
C:\Documents and Settings\baptiste\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [PHIME2002ASync] -C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] -C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [igfxtray] -C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] -C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] -C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [Raccourci vers la page des propriétés de High Definition Audio] -HDAShCut.exe
O4 - HKLM\..\Run: [RTHDCPL] -RTHDCPL.EXE
O4 - HKLM\..\Run: [SynTPEnh] -C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] -"C:\Program Files\Java\jre1.6.0_02\bin\jusched.exe"
O4 - HKLM\..\Run: [AGRSMMSG] -AGRSMMSG.exe
O4 - HKLM\..\Run: [PCMService] -"c:\Apps\Powercinema\PCMService.exe"
O4 - HKLM\..\Run: [avast!] -C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [CnxDslTaskBar] "C:\Program Files\ZTE Corporation\ZXDSL852\CnxDslTb.exe" "ZTE Corporation\ZXDSL852"
O4 - HKLM\..\Run: [EPSON Stylus C46 Series] -C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0T1.EXE /P23 "EPSON Stylus C46 Series" /O6 "USB001" /M "Stylus C46"
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [SuperCopier2.exe] -C:\Program Files\SuperCopier2\SuperCopier2.exe
O4 - HKCU\..\Run: [WOOKIT] -C:\PROGRA~1\Wanadoo\GestMaj.exe EspaceWanadoo.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O7 - HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegedit=1
O8 - Extra context menu item: Add to AMV Converter... - C:\Program Files\MP3 Player Utilities 4.03\AMVConverter\grab.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.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
O14 - IERESET.INF: START_PAGE_URL=file://C:\APPS\IE\offline\fr.htm
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/bina [...] b56986.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) - http://messenger.zone.msn.com/bina [...] b56649.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/bina [...] b56907.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxdev.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Ad-Aware 2007 Service (aawservice) - Unknown owner - -"C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - -"C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe (file missing)
O23 - Service: avast! Antivirus - Unknown owner - -"C:\Program Files\Alwil Software\Avast4\ashServ.exe (file missing)
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: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - c:\APPS\Powercinema\Kernel\TV\CLCapSvc.exe
O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - c:\APPS\Powercinema\Kernel\TV\CLSched.exe
O23 - Service: CyberLink Media Library Service - Unknown owner - -"C:\Program Files\CyberLink\Shared Files\CLML_NTService\CLMLServer.exe (file missing)
O23 - Service: Generic Service for HID Keyboard Input Collections (GenericHidService) - Unknown owner - c:\APPS\HIDSERVICE\HIDSERVICE.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Unknown owner - -"C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe (file missing)
O23 - Service: Service Messenger Sharing Folders USN Journal Reader (usnjsvc) - Unknown owner - -"C:\Program Files\MSN Messenger\usnsvc.exe (file missing)
O23 - Service: Service Partage réseau du Lecteur Windows Media (WMPNetworkSvc) - Unknown owner - -"C:\Program Files\Windows Media Player\WMPNetwk.exe (file missing)