RUN "CMD" As Administrator.

First things first - run a command prompt As Administrator!

[Win 7] Win + R -> cmd -> CTRL + SHIFT + ENTER

[Win 8/8.1/10] Win -> cmd -> CTRL + SHIFT + ENTER.

[GUI]:

 

To DISABLE "Driver Signing" (so you CAN install UNSIGNED Drivers):

1) Disable "Integrity Checks".

2) Enable "Test Mode".

3) Restart your System.

Copy-Paste code to install unsigned drivers:

bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON
shutdown /r /t 0

above commands will:

1. "DISABLE Integrity checks" so unknown drivers could be installed.
2. Allow "Test" signatures.
3. Restart your computer.

 

 

To ENABLE "Driver Signing" (so you CAN'T install UNSIGNED Drivers):

1) Enable "Integrity Checks".

2) Disable "Test Mode".

3) Restart your System.

Copy-Paste below code:

bcdedit -set loadoptions ENABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING OFF
shutdown /r /t 0

above commands will:

1. "Enable Integrity checks" so unknown drivers won't be installed.
2. Disable/Disallow "Test" signatures.
3. Restart your computer.