Have you tried to disable driver signature enforcement?
1- Right-click on the Windows 10 Start menu and select “Command Prompt (Admin)” from the menu. In the Command Prompt window, type shutdown.exe /r /o and hit “Enter”.
2- In Windows 10 Boot Options Menu select:
Troubleshoot > Advanced options > Startup Settings > Restart > after reboot press 7
Same procedure with pictures:
https://www.howtogeek.com/167723/how-to-disable-driver-signature-verification-on-64-bit-windows-8.1-so-that-you-can-install-unsigned-drivers/
Then you can install it for sure.