I had previously disabled Windows updates, however a sneaky security update got through and fried my system. It changed my Nvidia drivers and now it won’t let me re-install any Video driver. I have tried the custom “Clean install”, putting the machine in Developer mode to handle unsigned drivers. However the Driver for the K20x will not install. Has anyone else experienced this, the update happened on the 25/02, and I have not been able to get it back up an running.