Pc infecté

Bonjour,
J'ai eu de gros ralentissements de windows et mon pc reboot tout seul au chargement de windows (il faut le démarer en mode sans echec, le couper et le rallumer pour que ça fontionne). Je soupçonne un virus d'être responsable de ces problèmes.
J'ai donc fait un scan avast et trouvé 5 trojans dont deux que je n'ai pas pu mettre en quarantaine.
Les ralentissements sont encore présents et je n'ai pas encore testé de redémarrer mon ordi (trop chiant de passer 1/4 d'heure pour l'allumer).
C'est là que je sollicite votre aide pour pouvoir interpréter mon rapport hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 19:44:53, on 25/11/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16735)

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:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\VIA\VIAudioi\SBADeck\ADeck.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe
C:\Program Files\QuickTime\QTTask.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device

Support\bin\AppleMobileDeviceService.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\System32\wbem\wmiapsrv.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Hijackthis Version Française\hijackthis vf.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =

http://search.conduit.com/?SearchSource=10&ctid=CT1750559
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =

https://www.msn.com/fr-fr/?ocid=iehp
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
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet

Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName

= Liens
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} -

C:\Program Files\Fichiers

communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} -

C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no

file)
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live -

{9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers

communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [AudioDeck] C:\Program

Files\VIA\VIAudioi\SBADeck\ADeck.exe 1
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI

Technologies\ATI.ACE\cli.exe" runtime -Delay
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: [SunJavaUpdateSched] "C:\Program

Files\Java\jre1.6.0_07\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program

Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [NBKeyScan] "C:\Program Files\Nero\Nero8\Nero

BackItUp\NBKeyScan.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program

Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program

Files\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}]

"C:\Program Files\Fichiers communs\Nero\Lib\NMBgMonitor.exe"
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Fichiers

communs\Adobe\Calibration\Adobe Gamma Loader.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel -

res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} -

C:\Program Files\Java\jre1.6.0_07\bin\npjpi160_07.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) -

{08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program

Files\Java\jre1.6.0_07\bin\npjpi160_07.dll
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: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} -

C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} -

%windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 -

{e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network

Diagnostic\xpnetdiag.exe (file missing)
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
O10 - Unknown file in Winsock LSP: c:\program files\bonjour\mdnsnsp.dll
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class)

-

http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/clie

nt/wuweb_site.cab?1216300496936
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash

Object) -

http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} -

C:\PROGRA~1\WINDOW~4\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} -

C:\PROGRA~1\WINDOW~4\MESSEN~1\MSGRAP~1.DLL
O18 - Protocol: wlmailhtml - {03C514A3-1EFB-4856-9F99-10D7BE1653C0} -

C:\Program Files\Windows Live\Mail\mailcomm.dll
O20 - Winlogon Notify: dimsntfy - %SystemRoot%\System32\dimsntfy.dll

(file missing)
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} -

C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: ANIWZCSd Service (ANIWZCSdService) - Alpha Networks Inc.

- C:\Program Files\ANI\ANIWZCS2 Service\ANIWZCSdS.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program

Files\Fichiers communs\Apple\Mobile Device

Support\bin\AppleMobileDeviceService.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: Service Bonjour (Bonjour Service) - Apple Inc. -

C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Service de l’iPod (iPod Service) - Apple Inc. -

C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Ma-Config Service (maconfservice) - CybelSoft -

C:\Program Files\ma-config.com\maconfservice.exe
O23 - Service: wampapache - Unknown owner -

c:\wamp\bin\apache\apache2.2.8\bin\httpd.exe" -k runservice (file

missing)
O23 - Service: wampmysqld - Unknown owner -

c:\wamp\bin\mysql\mysql5.0.51b\bin\mysqld-nt.exe

Merci d'avance.