Trouble getting 14.04 64 bit to re-install

[xigen]

I had Ubuntu 14.04 64 bit up/running/ and quite nicely tuned. Then ... potential virus + my-cat-rebooted-my-system (*seriously) - and now when I am attempting to re-install a big series of headaches.

MB: Gigabyte 970A-UD3P
Bios: American Megatrends F1 8/6/13
Processor: AMD FX 8320 64 bit

When I insert my Ubuntu 14.04 disk (I believe I am on attempt # 34..) it no longer even attempts to begin set-up. Instead the system goes directly to 12.04 ubuntu.

How do I get my bios to boot the disk?
It seem strange that the bios would stop letting me try versions of Ubutu/Mint.

Thoughts?

[xigen]

I re-set the bios to its original config. Then I went in and changed the boot sequence to:
-- DVD Rom
-- SSD
-- ubuntu

The install seems to have worked. However, when I try to boot I get a blank screen.

I changed the boot sequence to:
-- ubuntu
-- SSD
-- DVD
.......and ... I still get a blank screen

-- SSD
-- ubuntu
-- Disabled(DVD)
.... and I get a blank screen.

Thoughts?

[xigen]

Ubuntu 14.04 is now installed. Networking is not working - however, that is the subject of a different post.

-- ubuntu
-- SSD (Disabled)
-- DVD (Disabled)
... is the config which lets me boot to 14.04.

Cheers.