Nothing on the screen

If you press Alt & Enter does it swap to windowed mode?

If so, try then changing your resolution and/or refresh rate then revert back to fullscreen.

I see XP on the right of my screen at your reply. I am working on a MAC

I'm having the exact same problem. Audio plays, no visuals.

Macbook Pro

Retina, 13 inch, Late 2013

Processor 2.8 GHz Intel Core i7

Memory 16 GB 1600 MHz DDR3

Graphics Intel Iris

OS X 10.9.3 (13D65)

Dragon Age cannot run correctly on Intel IGPs, sorry. 

I've also had this problem on my 15" (Late 2013) MacBook Pro Retina. However, I am not running the Intel IGPs; they are disabled and I am using 

NVIDIA GeForce GT 750M 2048 MB for all graphics. 

Intel i7 2.3

16 GB 1600 MHz DDR3

OSX 10.9.4

Macs with the Retina display have a known issue, with a known work around.

Just set the resolution and aspect ratio to something the game can handle: say 1920x1080 (16:9).