So I did , but I lost all my achievements and so on for every game i have played since i got my 360 years ago...which was a bummer to say the least. but I also thought I lost all my saves and stuff because there wasnt any for any game

So I restarted on Skyrim and havent played any of my other games since then. But tonight I was being bummed out thinking about all the game saves I lost , so I decided to go look through my HD. Well lo and behold my Stuff was there but unregistered and stating " belongs to unknown profile"
Thing is now i was so happy to find out I was just a dummy and had my old stuff all along "minus achieves" I go to copy it over to my profile and it wont let me...saying it cant be copied over wtf!?
That tech gave me extremely little to go on when doing this so I have no idea what to do. Is my original profile still in their storage? Could I re download it again with my achieves so I can access my saves and content? Because when I had to re download I lost my user name to , I had to put in my email and now thats my xbox name...so confused!! And why cant I copy those saves over since its my xbox and my saves?
Anyways I could sure use some advice.
