Did Qubes actually brick my PC?

[chin...@gmail.com]

I installed the most recent Qubes 4 two days ago.  After trying it out and getting some things working, I decided it wasn't for me and tried to revert to Ubuntu and Gnome Boxes. 

When I tried to reinstall I could not boot Ubuntu (or any of several other distributions of Linux) due to fatal ACPI errors.  The only way I can boot to Linux now is setting acpi=off in grub. 

Now, even if I do manage to boot and attempt an Ubuntu installation it dies with a fatal grub error.

The machine has been running Ubuntu just fine for over a year.  It has never had an ACPI error before.

I am running an RX-580 in an Aourus Ultra Gaming Z370 board.  I hadn't changed anything other than the OS before I started troubleshooting.

I flashed the motherboard bios from F12 to F15 and loaded optimized settings.  Didn't help.  Still won't boot Linux normally.

I used dd to zero out my NVME drive and totally remove Qubes.  No help

What the heck did Qubes change and how do I fix it?