There is no way to recover a Parental control access password. The only solution is to import a new password into the registry from a special file.
- Use the download link to obtain the file
- Disable the anti-virus's self-protection
- Double-click on the downloaded file and agree to modify the registry
- Enable self-protection
- Now your password is "drweb" (without the quotes), do not forget to change it in the Parental control settings.