Fond d'écran inchangeable

Bonsoir,
Je reviens du forum Windows. Comme je l'ai expliqué là-bas, j'ai quelques petits problèmes de fond d'écran. En effet, il m'est impossible de le modifier, le bouton parcourir et le tableau de défilement ne sont pas en surbrillance. Le forum précédent a finit par conclure à un virus/malware/spyware [Rayer la/les mentions inutiles] (enfin que des trucs méchants quoi :/). Sur leur conseils, je passe donc ici avec un petit rapport du logiciel HijackThis :

Logfile of HijackThis v1.99.1
Scan saved at 17:40:15, on 16/09/2005
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\Intel\Wireless\Bin\EvtEng.exe
C:\Program Files\Intel\Wireless\Bin\S24EvMon.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccProxy.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
C:\Program Files\Norton Internet Security\ISSVC.exe
C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\cisvc.exe
C:\Program Files\Microsoft SQL Server\MSSQL$VAIO_VEDB\Binn\sqlservr.exe
C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
C:\WINDOWS\System32\snmp.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Sony\VAIO Event Service\VESMgr.exe
C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VCSW\VCSW.exe
C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VzCdb\VzCdbSvc.exe
C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VzCdb\VzFw.exe
C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment\VzRs\VzRs.exe
C:\Program Files\Sony\VAIO Zone Remote Commander\AvRmtCtr.exe
C:\Program Files\Sony\VAIO Update 2\VAIOUpdt.exe
C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
C:\PROGRA~1\Sony\SONICS~1\SsAAD.exe
C:\Program Files\Sony\VAIO Power Management\SPMgr.exe
C:\Program Files\Utimaco\SafeGuard PrivateDisk\pdservice.exe
C:\WINDOWS\system32\ICO.EXE
C:\Program Files\Sony\ISB Utility\ISBMgr.exe
C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe
C:\Program Files\Realtek\InstallShield\AzMixerSel.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Apoint\Apoint.exe
C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Fichiers communs\Sony Shared\AVLib\SSScsiSV.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Apoint\Apntex.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Steam\Steam.exe
C:\Program Files\Sony\SonicStage Mastering Studio\Audio Filter\SSMSFilter.exe
C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Program Files\ArcSoft\Media Card Companion\MCC Monitor.exe
C:\Program Files\Microsoft Office\Office\1036\OLFSNT40.EXE
C:\Program Files\Fichiers communs\Logitech\KHAL\KHALMNPR.EXE
C:\Program Files\Dofus\Dofus.exe
C:\Program Files\Dofus\dofus.dll
C:\Program Files\Dofus\Dofus.exe
C:\Program Files\Dofus\dofus.dll
C:\WINDOWS\system32\cidaemon.exe
C:\PROGRA~1\MOZILL~1\FIREFOX.EXE
C:\Program Files\Messenger\msmsgs.exe
C:\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.bing.com/?FORM=TOOLBR&cc=fr&toHttps=1&redig=4527FFF1C12746FC9EDB535C75E80ECC
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?FORM=TOOLBR&cc=fr&toHttps=1&redig=4527FFF1C12746FC9EDB535C75E80ECC
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.club-vaio.com/fr/
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = https://www.bing.com/?FORM=TOOLBR&cc=fr&toHttps=1&redig=4527FFF1C12746FC9EDB535C75E80ECC
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: CNisExtBho Class - {9ECB9560-04F9-4bbc-943D-298DDF1699E1} - C:\Program Files\Fichiers communs\Symantec Shared\AdBlocking\NISShExt.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - (no file)
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton Internet Security - {0B53EAC3-8D69-4b9e-9B19-A37C9A5676A7} - C:\Program Files\Fichiers communs\Symantec Shared\AdBlocking\NISShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: (no name) - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - (no file)
O4 - HKLM\..\Run: [VZRemoteCommander] C:\Program Files\Sony\VAIO Zone Remote Commander\AvRmtCtr.exe
O4 - HKLM\..\Run: [VAIO Update 2] "C:\Program Files\Sony\VAIO Update 2\VAIOUpdt.exe" /Stationary
O4 - HKLM\..\Run: [TVTunerLib] C:\Program Files\Fichiers communs\Sony Shared\TVTunerLib\TVTLInstTool.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [Switcher.exe] C:\Program Files\Sony\Wireless Switch Setting Utility\Switcher.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
O4 - HKLM\..\Run: [SsAAD.exe] C:\PROGRA~1\Sony\SONICS~1\SsAAD.exe
O4 - HKLM\..\Run: [SonyPowerCfg] C:\Program Files\Sony\VAIO Power Management\SPMgr.exe
O4 - HKLM\..\Run: [PDService.exe] C:\Program Files\Utimaco\SafeGuard PrivateDisk\pdservice.exe
O4 - HKLM\..\Run: [Mouse Suite 98 Daemon] ICO.EXE
O4 - HKLM\..\Run: [ISBMgr.exe] C:\Program Files\Sony\ISB Utility\ISBMgr.exe
O4 - HKLM\..\Run: [Hcontrol] C:\WINDOWS\ATK0100\Hcontrol.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Fichiers communs\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [AzMixerSel] C:\Program Files\Realtek\InstallShield\AzMixerSel.exe
O4 - HKLM\..\Run: [ATIPTA] "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint\Apoint.exe
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [Acrobat Assistant 7.0] "C:\Program Files\Adobe\Acrobat 7.0\Distillr\Acrotray.exe"
O4 - HKLM\..\Run: [Logitech Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [LDM] C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
O4 - HKCU\..\Run: [Steam] C:\Program Files\Steam\Steam.exe -silent
O4 - Startup: VAIO Launcher.lnk = C:\Program Files\Sony\VAIO Launcher\Launcher.exe
O4 - Global Startup: Audio Filter.lnk = C:\Program Files\Sony\SonicStage Mastering Studio\Audio Filter\SSMSFilter.exe
O4 - Global Startup: Logitech Desktop Messenger.lnk = C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
O4 - Global Startup: Logitech SetPoint.lnk = C:\Program Files\Logitech\SetPoint\SetPoint.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Monitor.lnk = C:\Program Files\ArcSoft\Media Card Companion\MCC Monitor.exe
O4 - Global Startup: Symantec Fax Starter Edition Port.lnk = C:\Program Files\Microsoft Office\Office\1036\OLFSNT40.EXE
O8 - Extra context menu item: &Google Search - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Add to Windows &Live Favorites - https://onedrive.live.com/?id=favorites
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_03\bin\npjpi150_03.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_03\bin\npjpi150_03.dll
O9 - Extra button: Créer un Favori de l'appareil mobile - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra 'Tools' menuitem: Créer un Favori de l'appareil mobile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.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=http://www.club-vaio.com/fr/
O15 - Trusted Zone: *.sony-europe.com
O15 - Trusted Zone: *.sonystyle-europe.com
O15 - Trusted Zone: *.vaio-link.com
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {14B87622-7E19-4EA8-93B3-97215F77A6BC} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab31267.cab
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
O16 - DPF: {5C051655-FCD5-4969-9182-770EA5AA5565} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab56986.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-FR/a-UNO1/GAME_UNO1.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) - http://messenger.zone.msn.com/binary/ZIntro.cab56649.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab31267.cab
O18 - Protocol: bwfile-8876480 - {9462A756-7B47-47BC-8C80-C34B9B80B32B} - C:\Program Files\Logitech\Desktop Messenger\8876480\Program\GAPlugProtocol-8876480.dll
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: VESWinlogon - C:\WINDOWS\SYSTEM32\VESWinlogon.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccProxy.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\ccSetMgr.exe
O23 - Service: EvtEng - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Image Converter video recording monitor for VAIO Entertainment - Sony Corporation - C:\Program Files\Sony\Image Converter 2\IcVzMon.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: ISSvc (ISSVC) - Symantec Corporation - C:\Program Files\Norton Internet Security\ISSVC.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: Service Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: RegSrvc - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: Spectrum24 Event Monitor (S24EventMonitor) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\S24EvMon.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FICHIE~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: SonicStage SCSI Service (SSScsiSV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SSScsiSV.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: VAIO Entertainment Aggregation and Control Service - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment\VzRs\VzRs.exe
O23 - Service: VAIO Entertainment Task Scheduler - Sony Corporation - C:\Program Files\Sony\VAIO Entertainment\VzTaskScheduler.exe
O23 - Service: VAIO Entertainment TV Device Arbitration Service - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VzCs\VzHardwareResourceManager\VzHardwareResourceManager.exe
O23 - Service: VAIO Event Service - Sony Corporation - C:\Program Files\Sony\VAIO Event Service\VESMgr.exe
O23 - Service: VAIO Media Integrated Server (VAIOMediaPlatform-IntegratedServer-AppServer) - Sony Corporation - C:\Program Files\Sony\VAIO Media Integrated Server\VMISrv.exe
O23 - Service: VAIO Media Integrated Server (HTTP) (VAIOMediaPlatform-IntegratedServer-HTTP) - Unknown owner - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\SV_Httpd.exe" /Service=VAIOMediaPlatform-IntegratedServer-HTTP /RegRoot="SOFTWARE\Sony Corporation\VAIO Media Platform\2.0" /RegExt="Applications\IntegratedServer\HTTP (file missing)
O23 - Service: VAIO Media Integrated Server (UPnP) (VAIOMediaPlatform-IntegratedServer-UPnP) - Sony Corporation - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\UPnPFramework.exe
O23 - Service: VAIO Media Gateway Server (VAIOMediaPlatform-Mobile-Gateway) - Unknown owner - C:\Program Files\Sony\VAIO Media Integrated Server\Platform\VmGateway.exe" /Service=VAIOMediaPlatform-Mobile-Gateway /RegRoot="SOFTWARE\Sony Corporation\VAIO Media Platform\2.0" /RegExt="\Addons\Packages\Mobile\Gateway" /DisplayName="VAIO Media Gateway Server (file missing)
O23 - Service: VAIO Cooporated Initialisation (VCI) - Sony Corporation - C:\Program Files\Sony\VAIO Cooperated Initialisation\VCI_SVC.exe
O23 - Service: VAIO Entertainment UPnP Client Adapter (Vcsw) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VCSW\VCSW.exe
O23 - Service: VAIO Entertainment Database Service (VzCdbSvc) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VzCdb\VzCdbSvc.exe
O23 - Service: VAIO Entertainment File Import Service (VzFw) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\VAIO Entertainment Platform\VzCdb\VzFw.exe


Voila merci de m'aider, j'ai un fond d'écran blanc relativement déprimant :x.