Frequency Out of Range Error when playing games

I have a Gateway FPD1975W Widescreen High-Definition LCD.
I used NVIDIA FeForce 8500GT card.
The monitor range is set to 60Hz. The problem is whenever I start Counter Strike game, my monitor will goes into black and then gives me a "Frequency Out of Range" Error.
Is this an error with my monitor's resolution?
If so, how can I set it correctly?
