TRY UNPLUGGING COMPUTER AND MONITOR AND DISCONNECTING MONITOR FROM THE BACK OF THE COMPUTER. BE SURE TO UNPLUG AND NOT TURN OFF. WAIT ONE MINUTE THEN PLUG COMPUTER BACK IN . RECONNECT MONITOR TO THE BACK OF THE COMPUTER AND PLUG IN. IF THIS WORKS, WAIT FOR NEW HARDWARE RECOGNIZED TO COME ON. FOLLOW INSTRUCTIONS, IF ANY. RESTART COMPUTER.
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