The problem was I could not enter any command.Code:
My mistake, I thought that command prompts in Linux were command lines.That's not a terminal but the boot screen and gives you detail why the GUI isn't loading. You can drop down to TTY to access terminal and fix it.
The problem was pressing Ctrl + Alt + F3 to F6 did not allow me to enter any commands.Ctrl+Alt with function keys F3 to F6 to access TTY. You can have 4 different sessions opened which you can switch between with F3-F6.
Ctrl+Alt with function key F1/F2 will bring you back to the GUI this case boot screen.
No just a textless screen with a blinking cursor.When you pressed the command did it take you to TTY where it would ask you for your username and password?