I'm completely new to linux so I'm trying to try (without installing) Ubuntu 14.04 on my Toshiba Satellite with Windows 10 (originally Windows 8) computer. This is my first time trying to mess around with operating systems like this, and honestly I don't know much about operating systems at all. I chose Ubuntu 14.04 because I read that it was the easiest/most common for beginners, but if I should give up and start somewhere even more basic just stop me here.
Anyways I downloaded the Ubuntu 14.04 ISO file and burned it to a DVD, which seemed to go well, the files on the DVD look like they're supposed to at least. However I'm having trouble when it actually comes to booting from the DVD. I've turned off fast boot, but when I try to boot my computer from the DVD it first takes me to the Grub(?) menu instead of the installation menu I saw in the tutorials, and then when I select try without installing, it just gives me the message "[ 0.0504531] Ignoring GBRT: Invalid Status 0 (Expected 1)", and then doesn't do anything. At that point I have to force shut down my computer. Did that mess up my DVD? It does this whether secure reboot is enabled or disabled. I'm totally stuck. I've been reading about UEFI vs. BIOS but I don't understand it and can't really figure out how this is relevant to my situation, or if that's what's causing my problem. Does anybody have any insight about this? Like I said I just want to try it right now I'm not looking to install yet!