So seemed to have lost my account of some sorts, whenever i go to play it asks me to install the game from disk one, even though i already had ages before..
Im pretty sure i was pretty maximum rank. It shows its installed on my HDD so?
Any tips or advice?

You would honestly be better off playing halo 3 or reach anyway

H4 sucks

I understand that just annoys me with the fact that I can't actually play it.
Halo 3 and Reach are much better but yeah.