1. Download CCleaner and install.
2. Double-click the CCleaner shortcut icon placed on your desktop after installation.
3. Left-click the 'Registry' icon located on the left side of the program window.
4. Click the 'Scan for Issues' button located at the bottom middle of the program window.
5. Once the scanning is completed, click the 'Fix Selected Issues' button located at the bottom of the program window.
6. Shut down the CCleaner software and restart to computer once the corrections are complete.