1. http://superuser.com/questions/689241/how-to-enable-booting-from-a-dvd-in-bios-o בתגובה להודעה מספר 0
Well if your computer is new then chances are it has UEFI BIOS.If that is the case then boot sequence might not show USB/DVD options because the windows you are trying to install are not UEFI compatible. If your system allows you to, then set the boot mode to Legacy mode after turning secure boot off.Then follow steps in the first Answer. if you dont have legacy boot then you might have to get a version of windows which is UEFI compatible.
--- --- --- --- --- *ביטלתי את האפשרות לתייג אותי, אז בבקשה לא להתעצבן שלא קורה כלום אחרי @ZiggyMan@