In fact, there are many ways to use unsigned drivers in 64-bit win8.1. As shown in the picture above, after booting, press the F8 key on the login waiting interface (different motherboards will vary , you can also enter directly from the system as shown below), enter the advanced startup items of the Windows system, we will find some differences from the original XP system, the last item is to disable driver signature enforcement, follow this You can use unsigned drivers when entering the system. Of course, you can also load unsigned drivers using debug mode, which is not recommended here.