recently my xbox has been rendered practically useless when it comes to online use. When i play games offline my xbox runs perfectly but as soon as i connect to live i cant access my friends list active download download updates, send messages etc etc most online based items are useless. it was running fine until we ran out of data on my modem and i was downloading a dlc. After this my xbox would not do basic functions on live except notify me that i'm online and promotions on the dashboard. now that i have more data it still wont do basic functioning on xbox live. Thanks hope someone can help.