Today I decided to finally try out Ubuntu, so I followed the Windows installation guide. I downloaded the Desktop Ubuntu 12.10 ISO for Windows, and used the Pen Drive Linux USB Installer to install Ubuntu on my external hard drive. When I rebooted my PC, nothing extraordinary happened. Then I went and changed my boot device order. There was two different entries including "USB", so I just moved one of them to the top, and when I chose save and exit, Windows just started normally again.
Then I went and tried moving the other entry including "USB" to the top, and moved the first one back. This resulted in a black screen with a line of text. The text said something including Syslinux, a copyright symbol, a name (Peter H. Avin or something) and two letters. Nothing else happened after waiting several minutes. I tried pressing several buttons on my keyboard, and at some point, every button started saying a "blunk!" noise. Waiting another fifteen minutes didn't do anything either, so I forced my PC to shut down.
I tried starting up the computer again, and it said that there may be a problem with the computer, maybe caused by recent hardware changes. It gave me 2 options, to start repairing the computer, or to start Windows normally. I started Windows normally, as I knew that this didn't need repair. When I tried going back to change the boot device order, and saw nothing had changed since last time, I just pressed "Save and exit", and got the black screen with the copyright line again.
I can't figure out what I'm doing wrong here to be completely honest. I installed Ubuntu on the right drive, and I've tried moving both of the entries including "USB" to the top in the boot device order, and neither of em helped me much. So what I'm trying to say is, I think I need help. What am I doing wrong?