quadro fx 1700 video card upgrade in early 2008 mac pro
Mac Pro early 2008 3,1. currently ATI Radeon HD 2600 with a 30" cinema display.
I just picked up an Nvidia Quadro FX 1700 by PNY from a local mac store, slapped it in and the display stays black even though the machines seems to boot up fine, itunes opens at login and I started a playlist blindly... Screen blank though. I tried twice as I thought maybe I didn't seat it properly but to no avail. I don't know where to start. I put the ATI card back in and it still works fine. Where should I start here? Any suggestions would be appreciated, thanks very much!
Mac Pro, Mac OS X (10.5.8)