I recently (June 2017) bought a Dell Inspiron 15 Gaming 7567computer with Windows 10 installed. I have created a backup image of the OS and also burned a bootable disk so that I can reinstall Windows 10 at a future date.
My old computer (which uses Windows 7) permits me to change the boot order sequence by using the F12 key during the startup process to access the BIOS and then edit the boot order sequence so that the machine boots from a DVD or USB drive. This makes it possible to restore a backup image from a previous date or even to use a different OS, e.g. Linux.
My problem is that the F12 key does not work on the new machine and I do not know how to create a boot order sequence that will permit me to boot from a DVD or USB drive instead of the hard drive. So at this point, I cannot use the bootable recovery disk that I prepared. I understand that there is now UEFI technology that controls booting.
Question: How can I make make the new computer boot from a DVD or USB drive?
Thanks in advance.
Regards,
Richard