Use the Windows+C key combination to call up the Settings menu of Windows 8. 1 operating system → Settings.

2

In the pop-up interface, click → Change computer settings.

Computer Settings → Update and Recovery

Special attention should be paid here:

The menus of Windows 8 operating system and Windows 8. 1 system will be different here.

Change the computer settings → General → Advanced Startup (restart immediately) → Troubleshooting → Advanced Options → Startup Settings → Restart, and then wait for the system to load itself and enter the advanced startup menu interface. When you see "Disable driver forced signing", just select it. Disable it and it will succeed.

Update and Restore → Restore → Advanced Start → Restart immediately.

Later, I came to this interface → Troubleshooting.

Troubleshooting → Advanced Options

Advanced Options → Startup Settings

Startup Settings → Disable Driver Mandatory Signature Menu Overwritten → Restart.

After the restart, there will be this menu. Select it to enter the driver for updating non-visa certification.

Disable driver signature enforcement (disable driver signature execution)

If you want to restart driver signature verification, the method to start driver forced signature is as follows:

Right-click the Start button → Right-click the command prompt (Administrator)

After opening the CMD command prompt window with administrator privileges, enter the following command line:

Bcdedit.exe- Set the load option to enable integrity checking.

Press enter to execute the command! If you are prompted, you will succeed.