It replaces UserInit in the registry, Clears the registry page file data, and when you reboot it resets UserInit back to default and then finally deletes all page files on all local disk drives. Use at your own risk. If there are no page files on any local disk drive then it will tell you and exit. When you reboot it will tell you if it failed or if there were no page files to delete. If it deletes the page files and there were no errors, there will be no message. Terms: This is free software and we are not to be held responsible nor liable for damage from the use or misuse of this software.