I just upgraded my windows 7 home basic to windows 8 release preview. I used to play nfs the run on my previous windows which ran perfectly but the game doesn't seem to work smoothly on windows 8 cp. At the same time in the control panel the AMD Radeon HD 7470M says "Windows has stopped this device because it has reported problems. (Code 43) ". I've tried installing drivers but nothing really helped me. my laptop model is hp dv6-6155tx.