Graphics display drivers (the device manager has a description and make of your graphics card) just go to their website for software updates.
It's great that w8 fixed it too - but, it may have just been an updated win file that was the problem. So, I run win update before anything else to see whether that works to solve weird program glitches - every manufacturer is constantly adding functions to their software through updates, and you have to keep them all in sync.
Hope this helps - and don't forget to update your pdr too - they put out a patch late in'12.