NOTE: When running in BIOS emulation mode, Apple completely masks out the Intel GPU hardware so only the discrete hardware is seen.
Hit next, then close, and restart normally. Choose the Microsoft Standard VGA Graphics Adapter (you may have to uncheck show compatible hardware and drill down to it manually. Hit Let me pick from a list of device drivers on my computer. Hit Browse my computer for driver software. Choose the Driver tab and hit update Driver. Go to Device Manager and double-click your display driver (ATI or nVidia depending on your Mac. F8-Boot Windows 7 and choose safe mode. Here's how to rip out the discrete graphics controller: Sucks to hear about your graphics controller! You can run Windows 7 using the default Microsoft Standard VGA driver. How do I disable discrete GPU, force win7 to use integrated graphics, with no screen access to system?. Black screen on Windows 7 boot no control. Discrete GPU is bust OSX relying on integrated graphics, Win7 still trying to use bust GPU. Macbook Pro 2011 OS 10.8 and Win7 partitions. Is there a way to do this with a Win7 equivalent of Mac's single user/shell mode? Key details / tl dr So, without getting to the Win7 desktop, I need to somehow disable/delete/move whatever drivers/settings are allowing Windows 7 to use the discrete GPU, and force it to instead rely ONLY on the integrated graphics. I now wish to boot up into my Windows 7 (Bootcamp-augmented) system, but when it starts, the screen cuts to black, signalling to me at least that it too is trying to utilise the dead discrete GPU. Result: my Macbook Pro lives on, powered by the integrated graphics. moved to the desktop) the AMD + ATI GPU driver files on my OSX partition, via single user mode, to prevent the discrete GPU from firing up at launch. Last week it happened to mine, and after learning about the problem and figuring it out, I disabled (i.e. 
It's a well-documented problem with Macbook Pro 2011 models that from 2014 onwards, the discrete GPUs that are automatically activated and deactivated (or whatever, I'm not going to pretend I know all the words) have started burning out, dieing and generally being a pain.
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