RegBackup is a registry hive backup utility that uses Volume Shadow Copy Service to safely backup hives and includes restore functionality from WinPE/RE or Recovery Console.
It is a one-click solution and can be scheduled via Windows Task Scheduler if desired. Both a fully portable version and an installer with uninstall support are available.
Simply execute RegBackup.exe! Backups are done without prompting, so the app can be scheduled via Windows Task Scheduler. There are no command line parameters necessary. Only a simple status window is displayed indicating what phase of the backup is taking place. No prompt is displayed when the backup is completed; it merely exits silently.