1. On win7 64-bit system, when some drivers cannot be successfully installed, consider disabling digital signature and restarting the computer; This is different from XP system, which does not have this function, so it is not necessary to consider disabling digital signature;

2, in the process of computer startup, don't wait to enter the user login box, press the F8 button on the keyboard, the system startup item will appear for us to choose;

3. Then select, disable digital signature, and start the computer. After digital signature is disabled, the driver can be successfully installed. However, after restarting the computer, the settings will be restored to enable digital signatures. The ban on some computers is one-off;

4. We can also turn off the digital signature by force. After entering the system, use the administrator and enter bcdedit.exe-set loadoptions _ integrity _ checks in CMD Runner; Then there will be a prompt to disable successfully;

5. Restart the computer, and the system will always turn off the digital signature by default. The driver installation will succeed.