Always it is better to perform a backup of any essential data
before manipulating it. In order to save your registry settings or
restore registry settings from a backup, use the registry backup and
To perform a backup:
Select create new backup option then click the next button, you will be prompted with a window that asks for a backup name (this tool will offer a default name you could change it), then click next button to complete the backup process.
To perform a Restore from backup:
Select restore an older backup option then click the next button, Select the file you wish to restore from the list of registry backup files you have previously saved, and then click the next button. You will be prompted with a window that asks you for what part of backed up files you want to restore. Select files you want to restore then hit the next button.
Note: you must reboot in order for the newly restored registry data to be used.