FCP won't open because I am getting this. , Help

I can not open FCP6 on my MacPro1.1 I have 3 NVIDIA GeForce 7300GT graphics cards. Never had any problem before but noticed on second monitor I have Matrix look display on it. Looks fried but switched to 3rd graphics port and I still get this,
Final Cut Pro requires that your system have a Quartz Extreme capable video card.
but 2nd monitor is OK.
I did remove and clean all graphics cards and also tried command-control-p-r and still nothing.
Any help!!
 
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