I can't set my bios boot sequence to cd/DVD

Hey people,
I'm currently trying to downgrade my windows 8 of to windows 7 but in my bios I can't set it to boot from cd/DVD. I can't set it to boot from anything except my windows 8 Partion.

It's an asus pc.

So when I go to boot sequence all I have is "windows_boot xxxxxx" xxx stand for numbers

I also tried to select the CDROM drive by holding down f8 but same thing I can either enter bios or start "window_boot"

Can any one help I also hope this makes senses


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EDIT
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here are some images of my bios

http://imageshack.us/photo/my-images/818/121114173907.png/

http://imageshack.us/photo/my-images/51/121114173901.png/

http://imageshack.us/photo/my-images/707/121114173857.png/

http://imageshack.us/photo/my-images/210/121114173853.png/

http://imageshack.us/photo/my-images/525/121114173831.png/

As you can see from the last image i only have 1 bootable sequence

has anyone encountered this problem before??
2 answers Last reply
More about bios boot sequence
  1. tony if your pc has the standard asus efi bios. in the easy mode on the bottom there should be icon cd-rom and efi-cd-rom. change the order to cd-rom then efi-cd-rom by dragging and dropping them. the other play you want to go in the bios is the boot screen in advance mode. make sure it says cd-rom then hard drive. then under cd-rom boot devices make sure the pc cd-rom and not the efi-cd-rom is the first boot device. if set right you should get a quick message to hit any key to boot. if it not the stock bios you can use a 4g usb stick and microsoft iso to usb tool to make a bootable usb windows 7 image.
  2. I originally had access to the icons in ez mode. But I no longer do I'll upload a screen shot to show you what I mean
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