Screen resolutions error

Hi,i have crossfire setting = full (optimalizated )

Resolutions is on the 1440x900 ( Maximum )

When i play crossfire,i have error .You see on the screen

How to fix please?

Thanks for help.

Windows 7 ultimate + Resolutions on Desktop: 1680x1050

Screens:

http://imageshack.us/g/651/msd200020.jpg/