hello i have a problem when i'm playing some games ex:saints row gat outta hell or sniper elite v2,becouse when i chenge graphics the monitor shows:input signal out of range change settings to 1280x1024-60hz on every resolution even 1280x1024-60hz or 800x600,i see the image behind that,i can play the game bit that error is sitting in the middle of the screen adn it's very disturbing i have i have a amd radeon hd 4870 or it is my monitor?? please help me resolve that