Updated Win 8.1 Pro OS is preventing MC from loading. Get graphics error, seems to be updated. Mine is an ATI Mobility Radeon HD 4200 Series (Microsoft Corporation - WDDM v1.1) and seems to be updated. PC keeps crashing when I try to install new driver. Created a dxdiag here: https://gist.github.com/anonymous/807d4d39f259f78ec5f6
Stu