I tried with Qubes 3.2-RC2 and 3.2-RC3 Image, none of these work.
Qubes 3.1 works, but the installer in 3.1 is quite "outdated".
What I tested:
Booting Qubes ISO in VirtualBox on Windows Host
Booting Qubes ISO in in Qubes as Host
Booting USB Drive with Qubes ISO on Qubes as Host (ISO written with dd)
Booting USB Drive with Qubes ISO on Qubes as Host (ISO written with Rufus)
Booting DVD with Qubes ISO on Qubes as Host
ISO checksums / signatures are fine. Checking the installation files before installing (The boot option "Check installation files & install" from the Image) doesn't work because the error appears before the actual check is performed.
I always get the same error:
https://i.imgur.com/W5R9Evv.png
Can anyone confirm this / has anyone a hint how I can get it work?
I also tried other ISO files, like Fedora 24, Debian or Tails. All working fine.
By the way, I also tried the Screenshot-Feature from Anaconda when installing it onto my hard drive, it always results into a black screen imminently after pressing the key-combo, which does not disappear. I always need to restart the system after trying.
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/sect-adminoptions-screenshots.html
-Fabian
Write it to USB using Rufus in DD mode. Then it will boot from USB for installer.
Another person asked about running it under ESXi, and that's what works for me, so it should be easy enough for you to achieve that to get your screenshots.
Otherwise, an inline video recorder would work perfectly.