If a driver is updated, you can do a roll back for that driver
From the Start Screen search for "Device manager".
Go to the Display adapter and open it by selecting the > sign before the image.
On the adapter right click and choose for properties
Go to the Driver tab and click on 'Roll back driver'
For the future to prevent Windows 8.1 from automatically installing new drivers, see
http://ccm.net/faq/35640-prevent-windows-8-1-from-automatically-installing-new-driversThis is the best way so you are self in control to do or don't a driver update