Clean Registry is a program to backup, clean and compress registry. Make your computer run faster and with less errors or system halts. The registry is vital to your computer's ability to run smoothly. Any faulty keys, registry viruses, or fragments can cause your computer to either slow down or not function properly. If your registry becomes infected with a virus or you have lost keys, it may require you to reinstall Windows. The Registry Backup option takes a backup of the registry. Click the Registry Cleanup button to search the database for invalid entries. After cleanups followed by a restart you should compress the registry to further enhance the performance of your computer by using the Registry Defrag Clean Registry can fully automatically perform all of the tasks without any need for hand-holding. Just click Auto Run to do all the above tasks automatically without any user intervention. Use Undo Cleanups if after cleanups you notice any misbehavior.