I'm looking for a computer program?

I saw it at a computer school, what it does is when you change something like a name or delete something after you re-start your pc it brings it back to the way it was before...I don%26#039;t know if I make any sense it%26#039;s for computer students that are learning how to create a network or change the settings on a computer but if by mistake they delete something or just to get the computer to it%26#039;s original settings...|||Sounds like System Restore that%26#039;s part of the Windows XP Operating System. It%26#039;s under Start -%26gt; Help. It can take the computer back to a previous state.|||If you have windows, you can download windows steadystate from microsoft for free.