Also, what game are you running? Some games, when initially setup, do not configure themselves to run at the native resolution that you are running Windows at. You may have to go through the game's setup/configuration to tell it to run at the same resolution as your desktop configuration. Something easy to check.
Do you have the latest drivers installed? What type of monitor do you have?
Microsoft Windows Client Team[/quotemsg
i having a laptop with windows 7 64 bit, 4 GB RAM, 512 MB ATI RADEON 5470. my game display not working full screen and my screen is 15.6" and resolution is 1366*766. no such games working in full screen mod....