To get started head over to NTWind Software and download the latest version of Close All Windows.
After the file is downloaded extract the CloseAll folder to a permanent Linklocation on your computer. Since
Close All Windows is an application I extracted the folder to C:\Program Files\ where applications are typically installed.
For easy access it is best to pin the application to the taskbar. Drag the Close All Windows application from the CloseAll folder onto the taskbar.
Download This software from Here.