That message occurs when you have booted into the MBR (Legacy) version of Windows 7, which will not install on a GPT configured drive which UEFI requires and just about any OEM Windows 8 installs will be set up that way.
When you boot your system, go into the boot device menu. You should see two entries for your DVD drive. One showing just the drive and one showing a UEFI version of the drive. Pick the DVD drive annotated with UEFI.