Complicated problem when running live version without ethernet cable

[Nicogremio]

Hello!

I'm really new at this type of community, I've downloaded Kali 3 days ago. At first view, i downloaded the Kali mini, that weights a lot loss than the complete one. I liked the interface and tools, so i decided to download the complete one. I downloaded it, burned into a USB and tried to run the Live version. but an error appears, it says

Oh no! Something has gone wrong. A problem has occured and the system can't recover

I searched on google the error on google, and found that i needed to click CNTRL+ALT+F1, i clicked and typed

apt-get install x-window-system

command as the tutorial said.
The tutorial also said that i needed a Internet connection, i do not have a Cable Internet, i only have a Realtek wifi adapter.
These errors are really frustrating me, I'd appreciate if someone helped.

Thanks!