Avast inexistant

Bonjour,
je suis désespérée voilà une semaine que je tente en vain d'installer avast sur mon ordi après sa dispartion soudaine non identifiée...
j'ai aussi essayé d'installer antivir, rien n'y fait
Du coup je me suis dis que j'allais restaurer mon ordi à une autre date, que dalle l'ordi refuse!!!
je ne sais plus quoi faire!!!
merci de me répondre voici le rapport hijack au cas où...

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16:47:01, on 18/08/2010
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18294)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe
C:\Program Files (x86)\Common Files\Lenovo\Scheduler\scheduler_proxy.exe
C:\Program Files (x86)\ThinkPad\ConnectUtilities\ACTray.exe
C:\Program Files (x86)\ThinkPad\ConnectUtilities\ACWLIcon.exe
C:\Program Files (x86)\Lenovo\LenovoCare\LPMGR.EXE
C:\Program Files (x86)\Lenovo\NPDIRECT\tpfnf7sp.exe
C:\Program Files\Lenovo\Bluetooth Software\BluetoothHeadsetProxy.exe
C:\Users\vali\AppData\Local\Temp\uttE2C9.tmp.exe
C:\Program Files (x86)\uTorrent\uTorrent.exe
C:\Program Files (x86)\Nero\Nero Burning ROM\nero.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Users\vali\Downloads\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
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://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
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://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
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} - (no file)
F2 - REG:system.ini: UserInit=userinit.exe
O1 - Hosts: ::1 localhost
O2 - BHO: HP Print Clips - {053F9267-DC04-4294-A72C-58F732D338C0} - C:\Program Files (x86)\HP\Smart Web Printing\hpswp_framework.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: ShoppingReport2 - {258C9770-1713-4021-8D7E-1F184A2BD754} - C:\Program Files (x86)\ShoppingReport2\Bin\2.7.12\ShoppingReport.dll (file missing)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\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 (x86)\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: DAEMON Tools Toolbar - {32099AAC-C132-4136-9E9A-4E364A424E17} - C:\Program Files (x86)\DAEMON Tools Toolbar\DTToolbar.dll
O4 - HKLM\..\Run: [TVT Scheduler Proxy] C:\Program Files (x86)\Common Files\Lenovo\Scheduler\scheduler_proxy.exe
O4 - HKLM\..\Run: [PMHandler] C:\PROGRA~2\Lenovo\PMDRIV~1\PMHandler.exe
O4 - HKLM\..\Run: [ACTray] C:\Program Files (x86)\ThinkPad\ConnectUtilities\ACTray.exe
O4 - HKLM\..\Run: [ACWlIcon] C:\Program Files (x86)\ThinkPad\ConnectUtilities\ACWlIcon.exe
O4 - HKLM\..\Run: [LPManager] C:\PROGRA~2\Lenovo\LENOVO~1\LPMGR.exe
O4 - HKLM\..\Run: [TPFNF7] "C:\Program Files (x86)\Lenovo\NPDIRECT\TPFNF7SP.exe" /r
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files (x86)\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\RunOnce: [FindyKill] C:\FyK\GO.cmd /2ndpassFR
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [uTorrent] "C:\Program Files (x86)\uTorrent\uTorrent.exe"
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [AnyDVD] C:\Program Files (x86)\SlySoft\AnyDVD\AnyDVDtray.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [ares] "C:\Program Files (x86)\Ares\Ares.exe" -h
O4 - HKCU\..\Run: [AlcoholAutomount] "C:\Program Files (x86)\Alcohol Soft\Alcohol 120\axcmd.exe" /automount
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files (x86)\Windows Media Player\WMPNSCFG.exe
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files (x86)\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Envoyer au périphérique &Bluetooth... - C:\Program Files\Lenovo\Bluetooth Software\btsendto_ie.htm
O8 - Extra context menu item: Envoyer l'&image au périphérique Bluetooth... - C:\Program Files\Lenovo\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Livre de reliures HP - {58ECB495-38F0-49cb-A538-10282ABF65E7} - C:\Program Files (x86)\HP\Smart Web Printing\hpswp_extensions.dll
O9 - Extra button: Sélection intelligente HP - {700259D7-1666-479a-93B1-3250410481E8} - C:\Program Files (x86)\HP\Smart Web Printing\hpswp_extensions.dll
O9 - Extra button: Envoyer à Bluetooth - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\Lenovo\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: Envoyer au périphérique &Bluetooth... - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\Lenovo\Bluetooth Software\btsendto_ie.htm
O9 - Extra button: ShopperReports - Compare product prices - {DB38E21A-0133-419d-92AD-ECDFD5244D6D} - C:\Program Files (x86)\ShoppingReport2\Bin\2.7.12\ShoppingReport.dll (file missing)
O9 - Extra button: ShopperReports - Compare travel rates - {EB620C54-E229-4942-87CE-E717109FC8C6} - C:\Program Files (x86)\ShoppingReport2\Bin\2.7.12\ShoppingReport.dll (file missing)
O13 - Gopher Prefix:
O15 - Trusted Zone: https://www.orange.fr/portail
O23 - Service: Ac Profile Manager Service (AcPrfMgrSvc) - Lenovo - C:\Program Files (x86)\ThinkPad\ConnectUtilities\AcPrfMgrSvc.exe
O23 - Service: Access Connections Main Service (AcSvc) - Lenovo - C:\Program Files (x86)\ThinkPad\ConnectUtilities\AcSvc.exe
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Unknown owner - C:\Windows\system32\agr64svc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe (file missing)
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe (file missing)
O23 - Service: BarDiscover Service - Unknown owner - C:\ProgramData\BarDiscover\bardiscover141.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files (x86)\Bonjour\mDNSResponder.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Program Files\Lenovo\Bluetooth Software\bin\btwdins.exe
O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: Fn+F5 Service (FNF5SVC) - Lenovo. - C:\Program Files\LENOVO\HOTKEY\FNF5SVC.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files (x86)\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: Nero BackItUp Scheduler 4.0 - Nero AG - C:\Program Files (x86)\Common Files\Nero\Nero BackItUp 4\NBService.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: PMSveH - Lenovo - C:\Program Files (x86)\Lenovo\PM Driver\PMSveH.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files (x86)\CyberLink\Shared files\RichVideo.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Program Files (x86)\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe
O23 - Service: System Update (SUService) - Lenovo Group Limited - C:\Program Files (x86)\Lenovo\System Update\SUService.exe
O23 - Service: ThinkVantage Registry Monitor Service - Lenovo Group Limited - C:\Program Files (x86)\Common Files\Lenovo\tvt_reg_monitor_svc.exe
O23 - Service: Incrustation (TPHKSVC) - Lenovo Group Limited - C:\Program Files\LENOVO\HOTKEY\TPHKSVC.exe
O23 - Service: TVT Backup Protection Service - Unknown owner - C:\Program Files (x86)\Lenovo\Rescue and Recovery\rrpservice.exe
O23 - Service: TVT Backup Service - Lenovo Group Limited - C:\Program Files (x86)\Lenovo\Rescue and Recovery\rrservice.exe
O23 - Service: TVT Scheduler - Lenovo Group Limited - C:\Program Files (x86)\Common Files\Lenovo\Scheduler\tvtsched.exe
O23 - Service: TVT Windows Update Monitor (TVT_UpdateMonitor) - Lenovo Group Limited - C:\Program Files (x86)\Lenovo\Rescue and Recovery\UpdateMonitor.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)