It doesn't show up in system profiler, and I can't switch between the 9400 and the 9600 in energy saver. I also can't load XP anymore, which only uses the 9600. All I see when I try to load Windows is a black screen (backlight is off) although the HD and everything else seems to be working. Also, I'm not sure if this problem is related or not but my MBP also seems to be burning up, even with the 9400m. I'm running the fans at 6200 rpm and the CPU is at 55 and the GPU is at around 50. All I have open are firefox, ichat, and skype. They both used to be around 35-40 with fans at 2000 rpm. I've tried virtually everything I can think of short of reinstalling XP (which I can't do since I didn't back up my files). I've reinstalled OS X twice already (second time without peripherals to make sure they weren't the source of the problem). Does anyone know of any other explanations/fixes or did my 9600 actually hit the crapper?