I find that my PC diasbled HD4000 video card and only have GT 650m for some reason.
I install chameleon in windows 8 pro.
Any one can help me?I know little about Mac.
There is my dsdt and IOReg files
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Lejenk，Thank you！But there isn't a HD4000 in Dell 7720 (2828,3D edition). It's disabled by dell.
nVidia does not, and will not work anytime soon. Set GraphicsEnabler=No.
I have the same system, 3d is provided by nvidia, delete the kext SteveRings mentioned, and you should be able to boot.
Check the topic for this model under notebooks. We have ethernet, audio and speedstep working.
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