Knowledge Point analysis:
Digital signatures are a good thing for Microsoft to make the Windows system more stable. However, many companies did not join the digital signatures for money, therefore, some independent hardware drivers do not have signatures. The installation prompt is: third-party INF does not contain digital signature information, but does not mean it cannot be used. To be compatible with these products, Microsoft, set disable driver forced signature. The following is the operation method.
Procedure:
Win7 system
First, shut down or restart the instance. Press F8;
Disable driver signature forcing
Win8, Win8.1, and Win10 are the same.
First, press Shift + restart;
Select troubleshooting;
Select advanced options;
Select startup settings;
Click restart;
Press the number 7 to disable the driver's forced signature.
After you start the system later, you can install the previous error driver. If you have a pop-up window, select yes.