If your monitor has an HDMI input, try plugging it in to an HDMI source, DVD player, DVR, etc. if it does the same thing, then yes, I agree get a new monitor. If it works, then you MIGHT have a problem with the video function on your computer. In that case I would take your computer to another monitor, most TV sets have suitable inputs. In this case, set the TV to the correct input, turn on the computer and see what happens, if you still get the black screen after 2 seconds, you need a computer tech.
Hope this helps.
PS has this happen to another villager, and it was the monitor.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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