Backup and restore of the registry

The most secure registry backup essentials are performed through the backup feature in Windows System Tools.
Back up your registry
Open the Start menu, click all programs → attachments → system tools → backup, and open the Backup dialog window. Select the Backup tab and expand Desktop → My computer in the item selection list on the left to check the "System state" item. In backup media or file name, specify the file name and path to save in the registry, click the Start Backup button, and complete the registry backup after the operation completes.
Registry Restore
When the registry fails, as long as you can log on to the system, open the Backup dialog window and switch to the Restore and Manage Media dialog box to perform a system restore operation. When you restore, specify the backup file that you just generated, and select the Restore project as System state.
Tip: In case of a registration failure caused by the system can not log on, in the Backup dialog window, select the Welcome tab, using the Automated System Restore Wizard to perform the backup. A failed restore disk containing a backup of the registry will be generated, which can be used to boot the registry when the system is unable to log on.