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#11
To get the HDMI out to work on a laptop you may have to toggle it via one of the function keys. Fn and the one with a display symbol on it. It will be one of the F keys. I don't think you have to be logged in for that to work.
Or Press the Windows LOGO key + P press the down arrow once and hit enter. That should put it in duplicate. You may have to be logged in for this to work.