MapPro, GT 120+ ACD 30 no picture

Any reason why I am not getting a picture on my 2008 2.8 8 core MP using a GT120 hooked up to a ACD 30? The card works with a DVI to VGA adapter a via monitor but not straight dvi from ACD 30. I think the mistake we made was swapping HD's. ACD works fine with the my old PC NVIDIA GeForce 9600 GT 512 MB. So I know both the ACD and GT 120 are in working order. I booted the ACD on the GT 120 and the the vga on the 9600 GT. The ACD was blank and the VGA was on. Went to the system report and the computer saw the GT 120 and that the cinema display was plugged in just no picture on the ACD. Now there is 667 ram in here and not 800 like it shipped with. I am wondering if the ACD has to be acclimated somehow to the new system.