GTX 770 Problem

[Mithos]

Hi to all! I've installed Mavericks 10.9 using Clover Bootloader and the HD4000 Graphics, works all fine! But when i switch the GPU to MSI GTX 770, Mavericks doesn't start. Only if i use the flag "-x". I've used some combination of flags such as: GraphicsEnabler=No, npci=0x2000 or npci=0x3000, but when i start in verbose, it stucks. 

 

Is there a solution for this problem?

 

Thanks to all

 

Edit: Problem solved, i deleted the Intel HD 4000 Kext from S/L/E