So I got my 24" iMac last week. It was big and beautiful and Mac OS X flew. I proceeded to install Windows only to discover that the blue Windows install screen would not appear on the enormous 24" display when I booted up from the CD. I connected an external display and there it is. I installed Windows using the external display and figured once I got all the drivers loaded, the display would work. It didn't. I started looking around and found a few threads on Apple's Support discussions about people with a) a 24" iMac who couldn't use the internal display or b) 23" ACD and a mac pro who couldn't use the ACD to install Windows. The issue is not localized to only people with the 7300GT or only people with the 7600GT. There are more cases of the problem happening with the 7300GT than the 7600GT but it is most likely because there are fewer 7600's out there. One Mac Rumors member, Flyinace2000, actually got a 24"er that ran Windows wonderfully but it had other problems. He exchanged it and the replacement will not. All of the 24" iMac (those with and without this problem) seem to have the same boot rom and SMC versions, GPU's with the same device ID and ROM revision and basically appear to be identical. I am looking to get a gauge on how prevalent this problem is. If you have a 24" iMac, please post your experience with Boot Camp. I contacted Apple and they agreed to accept my machine back and to send me a replacement with expedited shipping at no cost to me (aside from being out a computer for a week or two). This is despite the fact that Apple doesn't officially support Boot Camp and the machine worked perfectly the way it was intended, in Mac OS X. While I wait for my replacement, I would like to know what the chances are that it will work with Windows. Finally, anyone have a guess as to what would cause this sort of thing? I don't think it is Windows because my Ubuntu CD would show either. It doesn't seem to be a drivers issue because the external display works fine. It doesn't seem to be a resolution issue because it won't work in Windows no matter what I set the resolution to. Is it firmware? I don't know.