Any tutorial you read on the internet that suggests making changes to the Registry should warn you to make a backup before you begin. It’s absolutely critical, because even if you know what you’re doing it’s still pretty easy to break something. So here’s how to do exactly that.
How to back up the Registry using System Restore
The fastest and easiest way to back up your Registry is to create a System Restore point before you make any changes that you can use to roll back your machine to a happier time if necessary.