Monitor loses signal during boot.

[kbfish]

I just purchased a GTX 680 and ran Multibeast for ML (5.3) and checked off GraphicsEnabler=No. I uninstalled my old GPU, installed the new 680 and this is where I ran into my problem. Chameleon works fine, it gets to the White/Gray Apple logo screen, it sits there for 15-20 seconds and then the monitor loses signal.

I've tried running ML in safe mode, tried booting in Verbose mode (or whatever it's called), tried config=null, tried GraphicsEnabler=Yes. I can't get it to work. Any help would be greatly appreciated. Re-installing is NOT an option.

 

[Bob_the_Tomato]

Let's see if I understand you correctly.

You had an existing system that was up and running and you wanted to replace the old video card with a newer one, so far so good? So you removed the old card and put in the new one.

At what point did you run MultiBeast?
What are your hardware specs?
Did the machine ever boot with the new card?
Will it boot with the old card back in?
Did you ever see the desktop during any of your attempts?
Have you a UniBeast USB to try?

 

[kiyyto]

Are you using HDMI?

I was never able to get Displayport working correctly on boot up.
After boot up display port would work, but never during BIOS/boot.