How to disable driver signature enforcement in windows 8.1

To Disable :
Open Command Prompt as Administrator and type the bellow:
bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON


Restart the windows To Enable :
Open Command Prompt as Administrator and type the bellow:
bcdedit -set loadoptions ENABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING OFF Restart the windows