I have an HP Pavilion laptop. The model number is 15-cx0056wm. I can not get the live USB version of Ubuntu, or Kubuntu, or Lubuntu or Xubuntu to boot up. It boots on the other computers I own. I don't believe it to be a UEFI problem, because I get to the GRUB screen where it says "Start Ubuntu". But I disabled safe boot and enabled legacy mode just in case, and it still did not boot. It begins to boot, but then it hangs after a few seconds. The dots on the screen stop moving, and the hard drive indicator light stops blinking. I waited 20 minutes on one boot, just to make sure I was waiting long enough, and nothing changed. With Lubuntu, there is an option for "Safe Graphics Mode". Choosing this option does not make a difference - it still hangs. Does anyone have any ideas? Are any boot log files saved to the USB drive that I could look at?