Your video topper is connected to what is basically a media player. There's an .avi file in the thumbdrive that it plays. Certain games do not include support for a video topper, thus it would just be blank, so bally made video animations to play on the toppers. Games that support the topper will display stuff on the video topper, but you have to move the vga cable from the media player board to one of the vga connectors on the mpu. If I don't know if a game has video topper support, what I do is I always leave the vga cable from the video topper connected to the mpu. If I get no image, after game setup, then I make a note of it, so next time, I would just leave the topper plugged to the media player playing some generic animation, like "Hot New Game".