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	Joined: Mar 2012
	
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		Unlocking the BIOS will provide you with the option to choose which GPU is default. But I think using this option bricks your computer.
I wanted to do the exact same thing as you, so I could use ATI Radeon GPU on my hackintosh. But as soon as I applied that setting, I got bricked laptop.
If my laptop can be recovered, I will not touch that setting again.