Qubes 4.0 Simple Windows HVM Install doesn't seem to work

[Chrome]

https://github.com/Qubes-Community/Contents/blob/master/docs/os/windows/windows-vm.md

I am stuck at

• • Click "Boot from CDROM":
    • "from file in qube":
      • Select the qube that has the ISO.
      • Select ISO by clicking "...".
    • Click "OK" to boot into the windows installer.
• Windows Installer:

  • Mostly as usual, but automatic reboots will halt the qube - just restart it again and again until the installation is finished.

  • Install on first disk.

When I attempt to boot from the iso in another qube, it pops up two windows, first what appears to be the windows installer, then a blank terminal that seems unresponsive. I believe the process is borked but it shouldn't be? It's pretty simple yet doesn't seem to work for me. What do I do?