This function can create a full registry backup file or create a system restore point and restore you registry from a backup file.

If you want to created a system restore point recently, choose "Create system restore point" and click "OK" to create a system restore point.

If you want to create a full registry backup file, choose "Create full registry backup" and click "OK" to create a full registry backup file. (The fill will be saved in \backup folder.)

To restore your registry from a backup file, click the "Restore" button on tools bar. The Restore dialog window will display, allowing you to choose a Restore Point and click OK. The restore process will then begin.

PS: Normally this function will not be necessary because Wise Registry Cleaner automatically creates a backup of the entries it changes in the Windows Registry whenever the Repair function is executed. These backups allow you to undo any of these changes.