How to Export/Backup Windows Registry

The Windows Registry is a hierarchical database that stores configuration settings and options on Microsoft Windows operating systems. It contains settings for low-level  operating system components as well as the applications running on the platform: the kernel, device drivers, services, SAM, user interface and third party applications all use the registry. The registry also provides a means to access counters for profiling system performance.
Its easy and fast, you can make a backup file for all of your registries stored in OS. You can also select a specific registry to backup if you want to.
Step 1 : Go to Start and enter ‘regedit’ in search bar or press Win+R to open RUN then type regedit and hit enter.