There should only be the one partition on the HDD.
From what I remember, there were at least 5 partitions to delete
This most likely why you have been having problems with installing Windows, long time ago now but in my reply #55 you may recall the following in response to your reply #54 "the info in your reply #54 suggests that only a single partition was formatted and not the full drive which is what is needed." and in reply #57 an alternative means of wiping the entire drive "For an alternative means of formatting the whole drive should you need to, please see the tutorial here fwiw, I always use the autonuke option."
No idea why but the original partitions are still on the HDD and this is likely to be preventing Windows from installing it`s own partitions as it goes.
You already have DBAN so try wiping the entire drive again but this time use the no nonsense steps here (step 4) which will hopefully get you sorted.