Just a thought... check to see that the simms on your Warp Engine are seated correctly, it might be that one of them was disturbed when installing the graphics card. (The last time I changed upgraded the memory on my Cyberstorm MKII, in my A3000 which has a Cybervision 3d, I had the same symptoms that you describe. Reseating the Cyberstorms memory solved the problem. Hope this helps.
- BCP
