Chrome running on Chromium...
Chrome running on Chromium...
You're facing an issue with launching Windows in Virtual Box on Chromium. It seems the ISO file isn't loading properly, even though you have it installed. Check if the ISO is correctly copied to your local system and not just in the USB drive. Also, ensure Virtual Box is set up to boot from the correct ISO path. If you're still stuck, let me know what version of Virtual Box and Chromium you're using for more targeted help.
Chromium doesn't enable virtualization out of the box; you must develop it yourself with proper support. It also appears VirtualBox isn't compatible with Chrome OS, so you may need to "dual boot" Ubuntu using Crouton to run Chrome OS alongside VirtualBox without restarting.