Start-Run (enter gpedit.msc)- OK or press Enter. Open the local group policy editor;

In the opened local group policy editor window, we found: user configuration-management template;

In the management template expansion item, find: System, expand;

In the extension of the system, we find: driver installation, and then left-click: driver installation;

In the right window corresponding to the driver installation, we find: code signing of the device driver, left key: code signing of the device driver;

In the opened device driver code signing window, we select Enabled, and the drop-down boxes of options include: Warning, Blocking, Ignore for selection.

Warning: Notify users of files that are not digitally signed, and let users decide whether to stop or continue the installation, and whether to allow the installation of files that are not digitally signed.

Block: Indicates that the system refuses to install files that are not digitally signed.

Ignore: Command the system to continue the installation (including installing files that are not digitally signed).

If we want to install a driver file without digital signature, we can choose: Ignore, and then click: OK;

After the driver installation is completed, it is recommended to set the item just set to ignore as warning (default setting) to enhance the security of the system.