The driver in WIN7 X64 system needs digital signature, otherwise it can't be used normally. But sometimes it is necessary to use a driver without digital signature, but the driver cannot be used after normal installation. At this time, we can only use the driver after pressing F8 to enter the system in the mode of "disabling driver signature enforcement" at startup.

At present, there is no perfect solution to this problem, and it can only cure the symptoms, not the root cause:

Temporary solution: run, input: bcdedit/set test signing on enter.

Then restart.

You can turn off forced digital signatures.

However, there will be a prompt watermark after booting to the desktop, but there is no substantial inconvenience in use.