for some reason, your games think you have a second monitor attached and the games are switching to it. you will have to look at your video card documentation and see how to configure it so that it knows there isn't a second monitor.
Herb....
Whenever I go to play a game on my computer (64 bit 3400+ 2.2GH Processor, NVidia GForce FX6200, 128MB with a MSI K8NEO Motherboard, using Windows XP 64 Home, Direct 9.0 or better) the monitor goes black and in a little blue box it displays "Adjust Display Settings" but you can hear the game going in the background. What do I do and how do I fix it?

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