It sounds like your son is quite tech-savvy and has found a way to circumvent the time limits you've set using the Windows parental controls. Restoring the system to a previous restore point can indeed revert the system settings, including user accounts and permissions. Here are some steps you can take to prevent your son from using the System Restore feature and gaining administrator rights: 1. Disable System Restore: - You can disable System Restore on your computer, which will prevent your son from being able to use it to revert changes. - To disable System Restore: - Right-click on "This PC" or "My Computer" and select "Properties." - Click on "System Protection" in the left pane. - Select the drive for which you want to...