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by Malcolm J. Rayfield,Aug 7, 2013 10:35 AM in response to annettefrompeterborough
Malcolm J. Rayfield
Aug 7, 2013 10:35 AM
in response to annettefrompeterborough
Level 5 (7,928 points)
Make sure the display's USB cable is plugged into the computer?
Otherwise, try this
<http://download.info.apple.com/Apple_Hardware_Test/EDID_Reset_Tool.dmg>