OP back again! My Lenovo is still running strong and super fast, I love it! Then I saw the post about sun-setting the supervisor installations and was bummed. Then read that the sun-setting was put on hold and was happy again!
Well, as it turns out, I was gifted/stuck with a Series 7 DP710A4M that had a bad display. A bunch of colored lines running from top to bottom but the screen was still usable, just ugly. Well $68USD later and a trip to Ebay, the replacement screen arrived today and I got the bad one swapped out and viola!
New HA Touchscreen system!
It’s a 7th Gen i5, 12GB, 1TB, but it’s upgradable!
So, I upped it to 16GB, stuck a 250GB m.2 drive in it, disabled SecureBoot and Quick boot, and set the UEFI to UEFI Operating system and installed Ubuntu 20.04 desktop and everything works out of the box! I’m so stoked! Wifi - Connected and working, Touchscreen - accurate and working, Ubuntu booted after the first install attempt - WORKING!!!
Now I just need to follow the guides posted above to get HA installed and move over my Z-Stick!
Thank you to everyone to assisted with my UEFI / HA nightmare, especially @kanga_who. Such a great community!