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My display is blank or says “No video input” (Windows) or “No computer signal” (Macs). Is something wrong?

April 26, 2017blank display Macs Windows wrong

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My display is blank or says “No video input” (Windows) or “No computer signal” (Macs). Is something wrong?

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No — this just means your computer is either asleep or was shut down. If moving the mouse or hitting keys doesn’t bring the screen back, look at the front of the computer and make sure it is powered-on (light in large button should be lit).