I have a 2011 Macbook Pro 15" 10.7.4 with Windows 7 installed in Boot Camp. A few days ago, I tried to boot into Windows 7 and it just froze after I selected the Boot Camp volume on the Select Drive screen and the processor fan went into overdrive. This now happens every time. The only way to make it functional is to force-power-off and restart in OS X.
I don't understand what's happening - Windows 7 works fine when I use it via Parallels, but won't boot to the metal.
I've tried resetting the SMC and PRAM but nothing seems to work. This is extra frustrating because I need to use Windows for work.
I looked here, but it's no help: