So a long time ago... (2014) I installed Windows 8 on my Mac (mid 2011 with an Ati Radeon HD 4670). I recently made a mistake and got the windows partition uninstalled... I installed it again, this time with windows 10 and I can’t find a way to install the GPU driver without the screen going dark. The only apparent solution is to go back to win 7 or 8 and then upgrade it to win 10. If someone knows another way it would be great!!