I noticed that a lot of people don’t know how to install unsigned drivers in Windows 10. Namely because Microsoft made it hard for “Security” reasons. The reason why people may want to install unsigned drivers can range from homebrewed drivers to custom graphics drivers or just some drivers are unsigned when you get them.
Please note, I do not take any responsibility for idiocy when messing around with Windows.
You break it, don't sue me.
First of all, this isn’t as simple as you might hope so save and close any windows you care about.
Now go “Start”, “Settings”, “Update & Recovery”.
Under “Advanced startup” hit “Restart now”
When your system has finished its reboot, click “Troubleshoot”, “Advanced options” followed by “Startup Settings”.
Your system will restart again.
Now we need to select “Disable driver signature enforcement” To do so click the corresponding F key. For me it was F7 but it may be different for you.
Your system will now boot back into windows and you can install any unsigned drivers you like. Windows should still give you a warning if you are installing a driver from an untrusted source but won’t stop you if you want to.
Now go install custom video drivers and enjoy the boost in performance and fidelity.
http://www.tweakforce.com/