[ubuntu] Can't boot off LiveCD or USB to install...

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http://ubuntuforums.org – So I just recently built a new computer and I have Windows 8 running on it, bios is set to UEFI, and Secure Boot is off. Windows 8 runs perfectly on it. Well with the new version of Ubuntu out, I thought I would give it a try in a dual boot on my new system. I have a separate hard drive just for Ubuntu, however I can't even get an installer to load to let me install it! I have tried 13.04 and 12.10 on CD and 13.04 on USB, all x64 versions, and when I boot the PC, it sees the device, shows it as UEFI, I choose it and get the grub menu to choose Try Ubuntu, Install Ubuntu, etc, no matter what a (Hardware)