Hi,
I've installed KL from an ISO on a Vbox VM running on a Fedora 28 host. As part of a hacking course on Udemy: The installation went fine, as I followed the instructions for changing the sources.list entries and removing all previous, after install, to:

deb http://http.kali.org/kali kali-rolling main non-free contrib
deb-src http://http.kali.org/kali kali-rolling main non-free contrib

Then ran apt-get update && apt-get upgrade -y
This was obviously quite long, but the issue came during the update when the exploitdb just froze at that point. When eventually I shutdown and restarted the system, the screen just went a uniform blue and did not complete the boot process. Any ideas?

Thanks