(Stupid post eating monster!)
So I just talked with my cousin again. He says that windows did create a folder for his old files, but it's empty. However, this "empty" folder takes up 5gbs of drive space (according to the properties). I didn't think to have him check for hidden folders, but I will next time we talk.
In any case, that seems odd to me. Also, he is using 90gbs of overall hdd space, but aside from his music and porn (which we still can't locate), the only stuff he has on there is windows and whatever came pre-installed. All he has really added since is avast, itunes, and a few other little gibs. He doesn't have any games, photos, or non-porn videos. I can't think of what would be eating his drive space aside from these porn and music files.
It seems as though he just wants to delete this stuff too, as it is taking up a lot of drive space, and he doesn't have an enormous drive (250 gigs). I suggested re-installing windows fresh, which I think is a good idea at this point. Mostly because he doesn't have anything to lose, and it will clear up any real problems. However, he has no instal disk, since this was a retail laptop (still think it's bs that a disk is not included). I remember hearing something about how you can burn your own from within windows, but I don't really know anything about that. I asked if he made recovery disk, but alas, he did not.
In any case, if anyone has any helpful comments or even inquiries for more info, please add!