I have a 128GB flash drive that I've been trying to boot Ubuntu onto. I formatted the drive to NTFS and followed these steps. It all works fine, almost. I can boot from the flash drive and it takes me to the screen asking if I want to try Ubuntu, Install Ubuntu, etc. No matter which option I choose, nothing happens. My monitors lose display signal and my screens remain blank for over 5 minutes (at first I thought it was normal to temporarily lose signal to displays).
I've tried using a LiveUSB install but I can't seem to get it to run via a virtualbox. I'm fairly new to Linux, so that's why I'm using Ubuntu. I have an Nvidia GPU/Intel CPU if that helps.