Are you wanting to restore your computer, or just wanting to start it over? It's pretty easy to restart it. This action depends on which operating system you have. On Windows, you would do it from the start menu, and from an Apple computer you can press Control-Reject, and the press "R" once the dialog button appears. To restore a Windows computer, you can click the Start button, All Programs, Accessories, System Tools, and then click System Restore.