This assumes you have made a good dvd from a known tested download.
From here.
https://help.ubuntu.com/community/UEFI See all the page.
"Installing Ubuntu Quickly and Easily via Trial and Error
If you have a computer that is more recent than 2010 and you do not know whether or not you need to install Ubuntu in EFI mode, you should be able to get Ubuntu installed quickly and correctly using the following steps:
Create a LiveDVD or LiveUSB of Ubuntu (>=12.04.2) 64bit.
In your BIOS, disable QuickBoot/FastBoot and Intel Smart Response Technology (SRT). If you have Windows8, also disable FastStartup.
Boot your PC using the LiveDVD or LiveUSB and choose "Try Ubuntu". If you get a Secure boot or signature error, you may wish to disable SecureBoot as described here, then retry to boot the disk.
Install Ubuntu from the Live CD/DVD or Live USB in the usual manner, then reboot the PC.
If the PC does not load Ubuntu (but instead loads Windows, for example, as in Bug #1050940), or if the Windows entry in the GRUB 2 menu does not boot Windows (see Bug #1024383), boot your PC using the Live CD/DVD or Live USB and choose "Try Ubuntu" once again. When the live session has loaded, run Boot-Repair (see link for details). When Boot-Repair loads, click on the "Recommended repair" button, and write on a paper the URL (paste.ubuntu.com/XXXXXX/) that will appear. Then reboot the pc.
This should fix most boot problems. If this does not fix your boot problems, please create a new thread in this forum, describing your problem and indicating the URL you wrote in the previous step. "