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You just need to follow troubleshooting steps of some sort to determine what exactly is causing the problem. You already said the LCD monitors have worked with a different source so they're out. Now you need to check the signal from the laptop, if thats good then it's got to be a combination of either the cabling in between, or a resolution problem. Although when resolution it too high you typically either get no signal or a very fast rolling picture instead, not black and white fuzziness.
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