Erreur mises à jour Vista et Framwork

Bonjour à tous,

Voici mon problème en espérant avoir votre soutien car cela fait 2 jours de recherches et solutions non trouvées Grrrrr!!! lol
Merci

OS:Vista home premium sp1 (légal!)

Blocage des mises à jour suivantes:
Microsoft.NET Framwork 3.5 sp1
Windows Vista (KB959772)
Cumulative pour media center (KB967632)
Internet explorer 8 pour win vista

Codes : 603
et 800736CC

rapport: [07/02/09,19:35:02] Microsoft .NET Framework 3.5 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 'package'. MSI returned error code 1603
[07/02/09,19:35:03] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' is not installed.
[07/02/09,20:03:21] Microsoft .NET Framework 3.5 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 'package'. MSI returned error code 1603
[07/02/09,20:03:23] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' is not installed.
[07/02/09,21:06:55] Microsoft .NET Framework 3.5 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 'package'. MSI returned error code 1603
[07/02/09,21:06:58] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' is not installed.
[07/03/09,12:16:51] Microsoft .NET Framework 3.5 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 'package'. MSI returned error code 1603
[07/03/09,12:16:54] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' is not installed.
[07/03/09,13:06:40] Microsoft .NET Framework 3.5 'package': [2] Error: Installation failed for component Microsoft .NET Framework 3.5 'package'. MSI returned error code 1603
[07/03/09,13:06:41] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' is not installed.