GTX 680 Problems

[unvme8d]

So i have my build works perfectly with the onboard graphics of the ud5h i have but when i try to install a gtx680 my computer will boot show the apple logo then very shorty after my monitor says no signal. i cant seem to see any support for this graphics card on multibeast even though on many peoples screen grabs i keep seeing the drivers. i'm using 10.5.3 multibeast and 10.8.4 osx
Any help woulld be greatly appreciated!!!

 

[jvxr]

Is GraphicsEnabler set to Yes/No ? Also make sure that your Intel GFX card is disabled completely in the bios.

Try booting in single user mode , by selecting the option at the bootloader screen and toggle the graphicsenabler setting.

 

[unvme8d]

graphic enabler is set to no. when i boot into single user mode it will not boot. but errors "IOUSBFamily did not receive enough extra current for the super speed device" and now that i disabled the integrated graphics. if i try to boot normal it will go to the apple logo then a blank gray screen... single user mode gives the same error.