I am very new to linux, just so you know.

I chose ubuntu as my first linux distro. I created a boot flash drive and installed it on to my little netbook. It works fine, and I'm having fun playing around with it.

Now I wanted to install it on my main computer, however after inserting the flash drive and rebooting, and after the initial startup screen, the first screen that comes up has ALL the text showing up as little squares! If I remember correctly from when I installed it on the netbook, it's asking me what language I want on this screen.

Why would this happen on my main computer and not on the little netbook, when I used the exact same flash drive and installation?

I have a screenshot, but since I'm new here, it won't let me post it.