help my dash is gone

[andsull]

realy don't know what happend i have an xbox with a hard wired mod in it, i also have a hard drive 80gb and about ten or 11 games on it. two days ago i was playing my xbox fine , it would load the dash up and everything but then yestersay i went to go into it and play and the only dash that came up was the msdash , dont think this is too big of a problem but i am just lost, if ne one has ne idea how to get this back can u post it for me thanks have a merry xmas