I've been having this problem for a while now, and from what I understand, it's a fairly common issue with bootcamp but I have not been able to find a solution to the problem nonetheless. I am using a 15" Macbook Pro from 2011 (purchased in early September, not sure if that was before the 'late 2011' model or not), running Windows 7 Home Premium x64 through bootcamp v4.0. The graphics card is an AMD Radeon HD 6750m last updated on 6/13/2011 to version 8.812.0.0.
I have tried many times to update the card using the AMD catalyst control center supposedly made for windows 7 in bootcamp, but no matter what compatibility options I choose, the installer either tells me there is no graphics adapter (auto detect) or just crashes immediately after starting installation of the catalyst control center. I've also attempted reinstalling bootcamp several times, each with a fresh download of the windows support software, though I have not completely uninstalled Windows 7. I'm not sure if the problem is with the bootcamp drivers themselves or with AMD's software or a combination of both, and a solution would be greatly appreciated.
Also, I know this is completely the wrong spot for this, but while I'm here, does anybody else have issues running EA's Origin download service? I just installed it in bootcamp a few days ago to play Mass Effect 3, and ever since then my computer gets display lag (e.g. in windows media player the video freezes for a few seconds at a time, while the sound continues playing) sometimes, especially during and after attempting to play Mass Effect 3. I already checked to make sure that both Origin and Mass Effect 3 are fully up to date, so I thought it might have something to do with the graphics card.
Anyway, thanks for the assistance, and I apologize for asking a question that has probably been answered several times. I searched through several posts, I couldn't find any answers to my problem.