Pose Project not finding points

[JohnInWI]

Trying on various computers/ webcams combos with no success to create pose models. These are older Windows 10 PC's. When I attempt to train a model using webcam (using https://teachablemachine.withgoogle.com/train/pose) I get the webcam image, but no pose points are detected.
I saw something here about pose models not working on older PC's but very little info was given.
Both image and audio projects work well on the same computers.

My questions are: is it my computers? can it be corrected?