I wanted to try out Ubuntu without fully installing it on my PC, so i created a bootable Flash Drive, following these instructions https://tutorials.ubuntu.com/tutorial/tutorial-create-a-usb-stick-on-windows#0 I have a dell XPS 13 2 in 1. The Flash Drive is USB 2.0, that is put into a USB 3.0 to Thunderbolt 3 Switch. During the restart I hammered the f12 key like a maniac, came to the boot menu of dell and told the pc to boot from my USB 2.0 Flashdrive. I then passed some screens whith wite text on black background, that did not require actions from me and then came to a Screen like this one https://4.bp.blogspot.com/-vs0vHKOfLFA/UIJIBuUQEnI/AAAAAAAABjs/sNxZ9gLwj58/s510/1350715389451.png For the first 30 sec, the white dots moved and indicated booting, but then they stopped moving. After 10 min or so i forced my laptop to shut down by pressing the power button. I have tried several times, it is always the same. I only have acess to this PC, so i can't check if the problem is reproducable on other PCs.
Any Ideas what to do? Thanks in advance, Padit