Update on the HP Stream tablet:

I finally realized that I could have a microSD card in the device with the Onboard package on it to install on a LiveUSB in order to install anything.

Due to another 'ranter's suggestion, I started with all the Debian spins, but none of them had a graphical .deb package installer (which is really strange).

I finally went back to Ubuntu MATE, which does have the Onboard application already installed (which I'm not sure why I didn't notice that the first time), and it's now officially installing...

More updates at 11.