I have my son's Samsung ATIV Book 6 laptop, Model NP680ZSE-XO3US. It has two graphics cards, a regular Intel HD 4000 and a AMD Radeon 8600/8700M. I am trying to load the driver for the Radeon card, every one I have tried simply causes the machine to crash, requiring a re-start in Safe Mode. Unless there really is a problem with the graphics card this seems to be a driver issue. There is zero information on the Samsung website which directs you to the Samsun Update app - which doesn't install...