Nettoyage PC

Bonjour .
Depuis quelque temps tout semble indiquer que mon pC est infecté alors que je le nettoie régulièrement . Avast détecte un adware "win 32 : balloon"et a mis en quarantaine 3 fichiers infectés dont un qui touche le système de restauration . Je n'arrive pas à me débarasser de cette cochonnerie (ai tenté ad-aware, spybot , avast , ewido , easy cleaner ...) . Je suis inquiète pour le système de restauration car il y a quelques semaines j'ai raté une tentative d'installation de UBUNTU en double boot : j'ai donc réinstallé windows mais depuis Recover pro (pré installé sur un PC unika ...bios phoenix ...) est endommagé et apparemment irréparable . Voici la config de mon ordi et un rapport Hijackthis :
Configuration PC:
Ordinateur:
Système d'exploitation Microsoft Windows XP Home Edition
Service Pack du système Service Pack 2
DirectX 4.09.00.0904 (DirectX 9.0c)
Nom du système SY5PFA42 (farida)
Nom de l'utilisateur farida

Carte mère:
Type de processeur DualCore Intel Pentium D 820, 2800 MHz (14 x 200)
Nom de la carte mère Inconnu
Chipset de la carte mère Intel Lakeport i945P
Mémoire système 1024 Mo (DDR2-533 DDR2 SDRAM)
Type de BIOS Award (07/26/05)
Port de communication Port de communication (COM1)
Port de communication Port imprimante ECP (LPT1)

Moniteur:
Carte vidéo RADEON X550 Secondary (256 Mo)
Carte vidéo RADEON X550 (256 Mo)
Accélérateur 3D ATI Radeon X550 (RV370)
Moniteur Écran Plug-and-Play [NoDB] (12321)

Multimédia:
Carte audio Intel 82801GB ICH7 - High Definition Audio Controller [A-1]

Stockage:
Contrôleur IDE Intel(R) 82801GB Serial ATA Storage Controllers - 27C0
Contrôleur IDE Intel(R) 82801GB Ultra ATA Storage Controllers - 27DF
Disque dur ST3300831AS (300 Go, 7200 RPM, SATA)
Disque dur USB2.0 CompactFlashCard USB Device
Disque dur USB2.0 SmartMedia/xD USB Device
Disque dur USB2.0 SD/MMC Card USB Device
Disque dur USB2.0 MemoryStick Card USB Device
Lecteur optique PHILIPS PBDV1640P
État des disques durs SMART OK

Partitions:
C: (NTFS) 156814 Mo (45780 Mo libre)
E: (NTFS) 30161 Mo (11634 Mo libre)
Taille totale 182.6 Go (56.1 Go libre)

LOG


Logfile of HijackThis v1.99.1
Scan saved at 16:05:44, on 12/06/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\BILLPS~1\WINPAT~1\winpatrol.exe
C:\WINDOWS\system32\RunDll32.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Ahead\Nero BackItUp\NBJ.exe
C:\Program Files\CursorXP\CursorXP.exe
C:\CFGSAFE\AUTOCHK.EXE
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\WINDOWS\system32\cisvc.exe
C:\Program Files\Executive Software\DiskeeperLite\DKService.exe
C:\WINDOWS\System32\FTRTSVC.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4ss.exe
C:\Program Files\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe
C:\Program Files\SiteAdvisor\5248\SAService.exe
C:\WINDOWS\System32\snmp.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\Program Files\Hijackthis Version Française\VERSION TRADUITE ORIGINALE.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\Wanadoo\SEARCH~1.DLL
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) - {089FD14D-132B-48FC-8861-0048AE113215} - C:\Program Files\SiteAdvisor\5248\SiteAdv.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\jre1.5.0_06\bin\ssv.dll
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.03.0000.1005\en-xu\stmain.dll
O4 - HKLM\..\Run: [Tweak UI] RUNDLL32.EXE TWEAKUI.CPL,TweakMeUp
O4 - HKLM\..\Run: [WinPatrol] C:\PROGRA~1\BILLPS~1\WINPAT~1\winpatrol.exe
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [IMEKRMIG6.1] C:\WINDOWS\ime\imkr6_1\IMEKRMIG.EXE
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\GestMaj.exe TaskBarIcon.exe
O4 - HKCU\..\Run: [NBJ] "C:\Program Files\Ahead\Nero BackItUp\NBJ.exe"
O4 - HKCU\..\Run: [CursorXP] C:\Program Files\CursorXP\CursorXP.exe
O4 - Global Startup: AUTOCHK.LNK = C:\CFGSAFE\AUTOCHK.EXE
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Easy-WebPrint Add To Print List - res://C:\Program Files\Canon\Easy-WebPrint\Resource.dll/RC_AddToList.html
O8 - Extra context menu item: Easy-WebPrint High Speed Print - res://C:\Program Files\Canon\Easy-WebPrint\Resource.dll/RC_HSPrint.html
O8 - Extra context menu item: Easy-WebPrint Preview - res://C:\Program Files\Canon\Easy-WebPrint\Resource.dll/RC_Preview.html
O8 - Extra context menu item: Easy-WebPrint Print - res://C:\Program Files\Canon\Easy-WebPrint\Resource.dll/RC_Print.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} - http://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {9122D757-5A4F-4768-82C5-B4171D8556A7} (PhotoPickConvert Class) - http://appdirectory.messenger.msn.com/AppDirectory/P4Apps/PhotoSwap/PhtPkMSN.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O18 - Protocol: siteadvisor - {3A5DC592-7723-4EAA-9EE6-AF4222BCF879} - C:\Program Files\SiteAdvisor\5248\SiteAdv.dll
O20 - AppInit_DLLs: MsgPlusLoader.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
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: AVG Anti-Spyware Guard - Anti-Malware Development a.s. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: Diskeeper - Executive Software International, Inc. - C:\Program Files\Executive Software\DiskeeperLite\DKService.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - France Telecom - C:\WINDOWS\System32\FTRTSVC.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Sunbelt Kerio Personal Firewall 4 (KPF4) - Sunbelt Software - C:\Program Files\Sunbelt Software\Personal Firewall\kpf4ss.exe
O23 - Service: LicCtrl Service (LicCtrlService) - Unknown owner - rundll32.exe (file missing)
O23 - Service: SiteAdvisor Service - Unknown owner - C:\Program Files\SiteAdvisor\5248\SAService.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe