Windows 10 Not allowing me to boot from DVD

[md5]

I am trying to install another OS. In order to do so, I need to load the ISO on a DVD or a USB.
At the moment, I only have a DVD,
so i burned the ISO on the DVD and restarted. When I got into my MoBo splash screen, I entered into the boot menu and selected DVD. Instead of booting from the DVD, it booted from my HDD which contains win 10.

So, i changed the priority of the boot to DVD first. Still didnt work. It just boots into windows 10.
Any ideas? When I was on 7, it worked fine.

 

[Trouble]

That would suggest that whatever the contents of the DVD is, that your computer is not seeing it as bootable.
That could be for any number of reasons.
You have a UEFI system using secure boot and the DVD is not in a compatible format? The ISO was some how missing some key bits? The burn process didn't work correctly so you ended up with a bad DVD?