Solved (finally).
First, yes, it installed it on another pc (my laptop), easily.
Here was the silly problem.
The install would hang on the “searching for hardware changes”.
With that, I went into device manage, trouble shooting, hardware & sound, hardware & devices, next…
just so that it’d search for “hardware changes”.
SAME thing. It just hangs there.
So the problem isn’t the install. The install was just a victim of something that’s wrong on the desktop (bad driver, setting, or something) that causes the “searching for hardware changes” to never complete.
Here’s how I fixed it. I restored the pc back to a previous restore point that was before I attempted the install. That did it!
Thanks for your help!!