Since Windows 8, the driver signature enforcement is enabled by default. This enforcement needs to be disabled if you want to install unsigned drivers. Windows has to restart for this procedure, so be sure you saved all opened work before continuing.
By following this guide, windows will be visually the same as before after reboot. Though Windows 8/8.1 will behave the same as Windows 7 for installing an unsigned driver. This mode will only last until the next reboot but the installed drivers will stay. Therefore you have to enter this mode every time you want to install a new/different unsigned driver.
Boot into advanced startup
Open the “Run Command” by pressing “Windows Key” + “R”, then type ”shutdown.exe /r /o /f /t 00″ and press the “OK“ Button.
Startup settings for disabling driver enforcement
- Click “Troubleshoot” in the list of options that show
- Click "Advanced options" in the next screen
- Click "Startup Settings" on the list with "Advanced options"
- Finally restart the computer by clicking on the "Restart" button
Disable driver signature enforcement
After restarting the OS you can choose the mode you like to boot in. To disable the driver signature enforcement, choose option 7 here by pressing the function key "F7".
