www.killdisk.com and WIPE that drive completely clean and I bet the Ubuntu O/S will install perfectly.
I suspect that somehow your DBAN program is not working or actually running to completion. I have seen that problem with DBAN before. Killdisk is simpler but all you need to WIPE the drive of all contents.
P. S. - I just noticed one of your last posts. Make sure that you can see the drive in the BIOS. If you can NOT let us know and we will discuss further.