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So I have opened the DSDT.aml file from the Extra folder in Dell_Precision_M4300_ML.zip in Text Edit through the Chameleon Wizard after I extracted it on my desktop as a .asl file but I cannot find "device_type", Buffer (0x0D) { "NVDA,Quadro" }, so I can change it. I have used the Find feature in Text Edit, but nothing comes up. I deleted the NV kext files from /system/libary/extensions and I'm not getting the black screen but I understand that may cause other problems. Can some one help me find this text? TIA