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Turn monitor on and the light stays yellow will not turn green and screen stays black

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When it lights up the yellow light instead of the green one, that means that the monitor is not getting a signal from the computer.
The things to try (from simplest to most complex) are:

  1. Make sure the computer is on and not in "sleep" mode -- press the "Caps Lock" key and see if it lights up the caps-lock light on the keyboard.
  2. Make sure the video cable is connected from the computer to the monitor (that the cable hasn't come loose on either end)
  3. If your monitor has multiple inputs, make sure it's set to the right (probably analog VGA or DVI) input
  4. If your computer has more than one video output (like a laptop with it's internal screen plus the external monitor) then make sure the external monitor is enabled
If none of those solve it, post a comment back here and we can dive in to the more complex tests

Posted on Sep 06, 2010

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