Unable to upgrade to Windows 10, please help

Thank you for the advise. It used to work before and I didn't make any changes knowingly. Where do I find this
setting in the BIOS? I got an older Abit AW9D motherboard

thanks

Thank you for the advise. It used to work before and I didn't make any changes knowingly. Where do I find this
setting in the BIOS? I got an older Abit AW9D motherboard. I selected the DVD as 1 boot drive and when I try
to boot it asks if I want to boot from CD/DVD but then the drive will not spin and there is no activity

thanks

If the motherboard is old, it doesn't support UEFI, only legacy mode. If you choose to boot from DVD, and you have a bootable Windows disk inside, it should give you a prompt "Press any key to boot from CD/DVD" and counting a few seconds before it starts from hard disk. If you see the prompt, press ENTER to start from DVD.

Yes exactly it does and then I hit any key to continue but the DVD does not spin up or do
anything. It continue to boot to windows and then I can use the drive normally.

Then your DVD device might have a problem. Try replacing it.

But when I boot into Windows, the DVD works great

Try to update the BIOS to improve compatibility.

I also have seen some old motherboards that support booting from a CD-ROM but not from a DVD-ROM. When in Windows the DVD works fine. If this is your case, you can download Plop boot CD and burn on CD-ROM. This will display a custom boot menu which can access all your devices. First thing to try is to replace the Plop with the Windows 10 DVD and select to boot from DVD. If this doesn't work, create a bootable USB and use Plop to boot from it.

But this DVD was working without any problem til a few month ago and I could boot from it

You can try to load default settings in BIOS, just in case some setting is the problem. Before doing take a note of the hard disk configuration (AHCI or IDE) so you can set it again, otherwise Windows won't boot. Also I would try upgrading the BIOS to improve compatibility.