Hi guys, ok here is what i found !
When i tried to installed Microsoft .NET Framework 4 Client Profile (Standalone Installer) :
This is the message i got >>> Same or higher .NET Framework 4 client or higher has already been installled on this computer.
======================== This was in my Review Your Update History::
Microsoft .NET Framework 4 Client Profile for Windows 7 x64-based Systems (KB982670)
Installation date: 1/16/2011 8:22 AM
Installation status: Successful
Update type: Recommended
The Microsoft .NET Framework 4 Client Profile provides a subset of features from the .NET Framework 4. The Client Profile is designed to run client applications and to enable the fastest possible deployment for Windows Presentation Foundation (WPF) and Windows Forms technology.
More information: The .NET Framework 4 Client Profile is available on Windows Update
Help and Support: Microsoft Support