Mr Zarniwoop, I just need a little bit of clarification. I have the MSI R 9 280x for my 2012 Mac Pro. Debating on dealing with the no boot screen or flashing... If I downloaded your zip file in the comment u mentioned ATI Winboot in, what do I do with it? How would I connect the card to a windows machine to flash? I only have a Windows 7 HP Laptop. Any help or a step by step would be much appreciated!! Spent a lot of money on the card so I want to be sure before I do anything to it. Thanks man!!