The Windows registry is a database repository for information about a computer's configuration. The registry keep growing when you use Windows. As it does so, it attracts obsolete and unnecessary information, and gradually becomes cluttered and fragmented. With the growing of the registry, it can degrade the performance of the whole system and cause many weird software problems. To keep your computer in top performance, it is recommended to periodically clean your Windows registry with a reliable and efficient Registry Cleaner. CleanMyPC Registry Cleaner is just what you need!