All Microsoft Windows computers come with a Registry. Your Windows Registry contains a wealth of information about your computer. We constantly hear from your average computer user that after a length of time, it just doesn't run the same as it did when it was new. Most of the time, this is due to invalid entires that exist in your Windows Registry. These entires might be there because you stop using some programs or a program isn't properly removed. After removing these invalid entries, you will increase performance and reliability of your Computer.