So I have iAtkos and Snow leopard installed on two seperate drives. Both have successfully installed, but the monitor does not work with Snow Leopard. I was able to enter in all of my info in the Snow Leopard Startup by using VoiceOver, in the hopes that when it was all finished my monitor would work, but no.

I use a GTX 280 graphics card. I have display with iAtkos, but NOT with retail snow leopard. What's wrong?