How to Clean Registry
Step 2. Customize Scanning Process
Click "Customize Scan" and you will see many registry sections such as COM & ActiveX entries, Windows Autorun entries, Application Pathes, etc. are checked by default. If needed, you can uncheck one or some of them.
Step 3. Scan Registry
Click "Scan Your System" to start scanning and Free Registry Cleaner will find errors or issues throughout your registry.
Step 4. Fix Registry
When the scan is complete, you will see a list of issues checked by default. If you don't want to remove all the issues, uncheck some ones as you need. Then click "Fix selected" to start fixing. Or you can right click to fix the current/selected/all registries and export the results to a text file.