When you no more use a certain software on your computer you can uninstall it. On the one hand you can free up a disk space, and secondly you will alleviate your computer in case of software that works in the background and therefore uses the resources of your computer. When you are uninstalling a software in Windows you are using Add/Remove Programs tool which is available in the Control Panel. Although this toll is practical it is far from being fully effective because it often happens that after uninstalling a software, there are still some traces of software left on your computer. In this tutorial I will show you how to use a free tool called Revo Uninstaller and completely uninstall a software including a registry, folders, hidden files or other traces he left.