Cleaner and regcleaner
Now that your PC is completely up to date and free of unnecessary software and viruses, it is important to clean up. Choose one of the cleaners and clean things up. Using some of these programs you can also uninstall software. Optionally, you can repeat this using another cleaner. Now it’s time to clean up the registry and defragment it. Before you do this its preferred to make a backup of the registry with eg ERUNT. Cleaning can be done with one of the register cleaner, or a cleaner that is an registry option. Repeating with another registry cleaner is optional. Restart between sessions. Finally, you can use NTRegOpt or Auslogics Registry Defrag to clean up the last bits of free space from the registry.