After Lenovo ideapadY460 hard disk is damaged, it is impossible to verify the digital signature of the driver required by the system after replacing the hard disk and installing the video card and wireless network card driver. One is to turn off the digital signature verification of the driver,

The second is to download the driver certified by Microsoft.

Actually, it doesn't matter, just install it directly.

The reason is that in order to ensure the stability of drivers, Microsoft will authenticate and sign each driver.

In principle, unsigned installation is not recommended.