Problème de wallpapers

Bonjour,

j'ai un problème avec mon fond d'écran il m'est impossible de le changer, j'ai un fond bleu. J'ai posté un rapport de fixwareout je ne sais pas si ça peut aider.
merci d'avance
Username "damien" - 21/11/2008 18:32:46 [Fixwareout edited 9/01/2007]

~~~~~ Prerun check

Cache de résolution DNS vidé.

System was rebooted successfully.

~~~~~ Postrun check
HKLM\SOFTWARE\~\Winlogon\ "System"=""
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~~~~~ Misc files.
C:\Program Files\Microsoft Security Adviser Deleted
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~~~~~ Checking for older varients.
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~~~~~ Current runs (hklm hkcu "run" Keys Only)
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"RTHDCPL"="RTHDCPL.EXE"
"Alcmtr"="ALCMTR.EXE"
"SiSPower"="Rundll32.exe SiSPower.dll,ModeAgent"
"SynTPEnh"="C:\\Program Files\\Synaptics\\SynTP\\SynTPEnh.exe"
"TouchPadHotKey"="C:\\Program Files\\FSC\\TouchPad HotKey Utility\\TouchPad_HotKey.exe"
"Install5G"="D:\\Install.exe /SI=30"
"WOOWATCH"="C:\\PROGRA~1\\Wanadoo\\Watch.exe"
"lphclhdj0endg"="C:\\WINDOWS\\system32\\lphclhdj0endg.exe"
"AVP"="\"C:\\Program Files\\Kaspersky Lab\\Kaspersky Anti-Virus 6.0 for Windows Workstations\\avp.exe\""
"WinampAgent"="\"C:\\Program Files\\Winamp\\winampa.exe\""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\avp6_post_uninstall]

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"CTFMON.EXE"="C:\\WINDOWS\\system32\\ctfmon.exe"
"SpybotSD TeaTimer"="C:\\Program Files\\Spybot - Search & Destroy\\TeaTimer.exe"
"WOOKIT"="C:\\PROGRA~1\\Wanadoo\\Shell.exe appLaunchClientZone.shl|DEFAULT=cnx|PARAM="
"msnmsgr"="\"C:\\Program Files\\Windows Live\\Messenger\\msnmsgr.exe\" /background"
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Hosts file was reset, If you use a custom hosts file please replace it...
~~~~~ End report ~~~~~

Configuration: Windows XP
Internet Explorer 7.0