If I understand your post, you downloaded an ISO file, is that right? Then how did you burn it to the DVD? It sounds like you might not've used the right tool to do that. If you need a program that will do it right, you can download the free program, Imgburn from http://www.imgburn.com . Give it a try.
Gosh this is really starting to bug me!! I have been trying to solve this for a few hours now and got absolutely no where! So I want to do a clean install of Windows 8. I did all the necessary steps to get it on a bootable dvd and USB. That was the easy part. At first I tried booting by DVD, I went into the Bios and set the first priority boot to CD/DVD. After that and multiple restarts I get nothing! I went into F12 and it says to boot from Hard Drive. Okay so this isn't working out. I then proceed to copy the ISO Windows 8 to a USB drive. Okay done, that was easy, I then go into Bios again and don't see an option for USB FLASH directly, but see other USB boot options, such as USB DVD, USB FLOPPY, AND USB HARD DRIVE. I first select USB DVD, After multiple restarts nothing! Went to F12 (Boot options) and still nothing! I then choose USB HARD DRIVE, Same exact thing!!! So now I'm on my knees, and have given up!! I seek help from my community and I hope you guys can figure this out.
I just bought the computer 3 weeks ago, Its a brand new Aurora R4. I don't know if this is a hardware issue or not, doesn't seem like it. I tried booting from CD/DVD with the re-install OS AlienWare gave me and it read it perfectly. So if it picks up that it should work right? So I tried multiple Blank DVD's and even went out and bought some new ones! Still nothing!! ahhh, sorry this is really bugging me. Something so simple, but I am so lost.
Thanks for any help peeps!