Haha soo, i could use a little help guys...

Long story, short... I decided to build my own pc, did my research, used an exact build someone from the community posted (link) build went off without a hitch... the dilema is as follows

In the process of trying to install ubuntu, an error keeps coming up "unable to find a medium containing a live file system". Tried changing IDE to AHCI to no avail.

Ideas? Solutions? Thanks