Cant boot Windows 7

I just bought a new computer, this is the specs ASUS M52AD-XTREME-NR005T Intel i5-4460 / 8GB / 2TB / GTX960 2GB /

Lets say that I bued a copy of windows 7 on a cd, and I want to install from this cd on my new computer. But when I choose to boot from disk I just end up on windows 10. I tried with an Ubuntu disk that I bued and I can boot from that. I tried the theoretical windows disc on my other computer and I can boot from the cd.

What can I do_