boot - BootableUSB Stick created for installation, doesn't working on Ubuntu13.04

I also Download a ubuntu-14.04-desktop-i386.iso file and also created a live USB stick by Startup disk creator. It's status said, Live USB disk creation complete. Then I did restart but nothing happen. It's not booting. How I can install it. Please help me.
I'm using ubuntu 13.04.
Motherboard: Gigabyte G-41MT-ES2L