most new mb now have two bios.the old stock bios and a efi bios. make sure on the easy bios you have cd-rom not efi cd-rom set as the first boot device. you may also have to change the boot order under boot in the bios. (also check that your using a windows 7 cd and not office and the cd is a full version cd not an upgrade cd.
I'm not quite sure what you mean by efi bios... I'm pretty new to building computers, but it seems that there's only one bios... I have no idea how to check though, honestly, I'm a noob when it comes to this stuff.
EDIT: When I start the PC, it says to press f2 to go into the UEFI setup. I believe that is the bios, correct me if I'm wrong, and if I am, it would be nice to learn how to get into the actual bios... again, sorry for being such a noob with this stuff.