It doesn't matter if you have the W10 DVD. Just go ahead and use Microsoft's Media Creation Kit (no ISO involved or mentioned ever) and try a boot from the USB version. You use your key for this one.
As only those that own this can answer I'd check one other thing. Make sure the BIOS is current and to factory settings before the W10 install.
Hello
I am having difficulty getting my win10 pro cd to boot my Acer b113, its a genuine cd and would like to run legacy bios and non uefi as I eventualy want to dual boot.
I have set bios to legacy and non uefi and have an external usb2 dvd drive but it does not see it as boot .
Should it boot.
Thanks
diode84

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic