What's the refresh rate that you're using in the system's configuration? S/B set at 59 to 60 Hz. refresh rate.
What screen resolution are you using? 22" screens usually like 1680X1050 and not 1920X1080.
Is what you have it set at the suggested resolution for the screen?
Has the video card been paired with this screen prior to this problem? Did it work well then?
Can you go into the monitor's setup screens and reset everything to default settings?