Try the following methods: open the registry, navigate to HKEY _ local _ machine \ software \ Microsoft \ driver signature, and double-click the policy key value on the right: when its value is 00, it means that unsigned drivers are installed by default; Its value is 0 1, which means that when an unauthenticated driver is installed, a warning dialog box will pop up, allowing us to choose whether to install it; If its value is set to 02, it is not allowed to install drivers that have not been verified by Microsoft.