Now, This is the place where you have apply the trick When it Shows “39 Minutes to Complete the installation, Quickly press Shift+F10 button on your keyboard. It will open Command Prompt Now type “taskmgr.exe” in Command Prompt windows, This will open Task manager. In Task Manager, Click on “Process” tab. Where you will find a number of running programs Find “Setup.exe” in all those Programs, Right Click on it, And then click on it and then go to Setup.exe -> Set Priority –> and click on High.That’s it, All done, Now your OS will install much faster then before - the quistion is there is a batch or command or any thing to do that unattend? plz help