1. Ensure that your computer system has problems due to errors in the registry. Problems related to errors be unresponsive programs, lagging Internet service and computer lockups.
2. Download the CCleaner software (see Resources below).

3. Install CCleaner onto your computer by following the installation instructions.
4. Open and run the CCleaner software.
5. Click on the “Registry” symbol button, which is a blue cube icon on the left side of the program screen.
6. Check all of the options that you want to scan for errors under the “Registry Integrity” section.
7. Click on the “Scan for Issues” button, which is located on the bottom portion of the program screen. After the scan completes, all of the errors in your computer registry will appear in the main window displaying the “Problem,” Data” and “Registry Key.”