Go to Apple’s "QuickTime Download" page, get the latest edition of QuickTime for your own Windows device, save it on your desktop. Please pay more attentions to the “Windows Requirements” under the blue "Download Now" button. You may need to update your old Windows before taking the actions below.
If you’re a Win8, Win7, Vista owner, you right click on the following QuickTime Installer file, choose the "Run as Administrator" on the context list. http://howto-uninstall.windowsuninstaller.org/uninstall-quicktime-player-download-quicktime-7pro-movie-maker-program-uninstaller-for-windows-7xp/
