Disable Driver Signature Enforcement in Windows 7/8/10 64-Bit Redmi Note 3

AndroidHordes - This is an handy write-up especially installing "Unsigned Drivers" as Microsoft enforces a “Digital Signature Requirement” on all users of 64 bit version of Windows 7 and later. This comes handy when you needed it most after all the frustration dealing with it and run it flawlessly and away with your task.

Disabling method for Windows 7 64-bit:
Permanent method:

• Go to Start Menu and go to "All Programs", then "Accessories", right click your mouse on "Command Prompt" and "Run as administrator", as shown below:

1. bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS

1. bcdedit.exe -set TESTSIGNING ON

• Type the above codes and press "Enter" after each command, as shown below:
• Reboot your PC/Laptop
• Now Signing Enforcement is disable, in Test Mode as shown in the above imagery on the lower right-hand corner

• To "Enable Driver Signature Enforcement" enter the following code:

1. bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS

1.  bcdedit.exe -set TESTSIGNING OFF

Temporary method:

During booting your PC/Laptop, press "F8" key continously to access the "Advanced Boot Options"
Use the "Down" arrow key to scroll down to “Disable Driver Signature Enforcement”
Press "Enter" to choose
It will automatically reboot disabling the enforcement accordingly, as shown below:

Disabling method for Windows 8.1 & 10 64-bit:
Permanent method:

• Press the Windows key + X and then click “Command Prompt (Admin)”, as shown below:

1. bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS

1. bcdedit.exe -set TESTSIGNING ON 

• Type the above codes and press "Enter" after each command, as shown below:-
• Reboot your PC/Laptop
• Now Signing Enforcement is disable.

• To "Enable Driver Signature Enforcement" enter the following code:

1. bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS

1. bcdedit.exe -set TESTSIGNING OFF

Temporary method:

• Simply find the Shutdown/Restart menu and hold down the SHIFT key while clicking on Restart.
• Once your PC/Laptop has rebooted you will need to choose the "Troubleshoot" option, as shown below:

• Choose Advanced options, as shown below:

• Choose Startup Settings, as shown below:

•  Click the Restart button on the Startup Settings screen to reboot your PC/Laptop, as shown below:

• After restarting in Startup Settings windows, press the F7 key on your keyboard to select “Disable driver signature enforcement“ as shown below:

• Now your PC/Laptop will reboot. Now you can go ahead install the necessary Unsigned Drivers and "Install this driver software anyway" as shown below:

• Enjoy!!

Source : MIUI