Windows registry saves all of the system configuration and software/Application information. When you use the computer, such as install/uninstall software, change computer settings, some registry information will become useless. So you need to do a regular registry clean for the Windows system.
Step 1：Choose “Registry Cleaner” under “System Cleaner” tab, click “Scan” to start a quickly scanning for your System.
Step 2：Wait for the progress to complete, and then click “Clean” to delete all of the useless registry entry. With a simple click, you will get a clean registry.
Additionally, if you want to customize items, you can click Custom Area on the button of page. Then you can tick off any one that you want to cleanup.