I've recently tried to do a clean wipe of my old OS (Vista) on my spare PC and go with Ubuntu. I downloaded the ISO image and used Universal USB Installer-1.9.3.3 to format my USB stick for Ubuntu.
Despite a success dialogue and no errors, when I restart the PC and try to boot from the USB, the only thing that happens is that it boots into my current OS, and not the Ubuntu installer.
What can I do to boot Ubuntu?