Windows XP users. 1  Click Start. 2  Click Programs, and then Accessories. 3  Click System Tools and open System Restore. 4  After processing, a window appears with two buttons at the bottom. 5  Make sure Restore my computer to an earlier time is selected and click.
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Windows Presentation Foundation (WPF) Windows Presentation Foundation (WPF) is a part of the Windows operating system that provides graphical user interfaces and environments for applications and services tha are developed and executed on Windows OS. WPF is a subsystem in the Windows OS that appeared in the Windows Vista version. It is also a component of .NET framework 3.0, providing programming tool and technique for graphical development and the authoring of applications.