Oh I do apologise, I thought it was well known. I recently got my 7970m and installed it and now when I boot using the 7970m the screen even though its set to max brightness is much more dim than it should be. When I boot using the IGD then the screen works as it should. I have tried using multiple drivers, multiple settings in my bios (enabling IGD with sg/peg) and tried using hwinfo as some people have found fixes with these methods. The one breakthrough i have had is that when i get the grey lines after clocking too high i managed to get back to desktop without a reboot and the brightness was at its fullest. but when i used fn+5 to go down then try to go back up it was back to being dim. I have now found if i close my lid and send the computer to sleep then wake it the screen is also working at the correct brightness... so this must mean its a bios or driver related issue??? I was just wondering what your input is...