Hi, 
this is to be part of my fixes to add a brightness slider for my Asus g750JX with 3D screen. 
i can only start it up with an EFI string and nvidia drivers. 
  
can some one just check this SSDT-7 Fixed.dsl.txt, compile it and reopen the compiled aml? 
(extension .txt only added so i can attach it here) 
  
(original extracted file attached also in acpi_ssdt8.zip) 
  
i cleared the errors already and most warnings and can compile it. 
But when i reopen the .aml the _ROM method errors are back. 
  
thanks. 
SSDT-7 Fixed.dsl.txt 
acpi_ssdt8.zip