Nod to https://www.youtube.com/watch?v=TxWN8AhNER0
We have Displayport and we have VGA. There is no such thing as you noted.
Disregarding that almost all PCs require you to either press some function key combo or try Windows Projector settings. Article follows and before that, stick to HDMI next time.
No complaining. That's the first hit on Google about your question.
My new computer will light up and turn on but my DisplayPort vga adapter won’t get a signal on my tv