Hittade denna... kanske kan hjälpa
http://forum.ea.com/eaforum/posts/list/275536.pageThese instructions are exactly verbatim, that is to say, they are exactly as they were given to me (i wrote them down), Skipping a step or changing the order may adversely affect the end-result of this fix. Please be careful to read the instructions and follow them precisely in order to guarantee the highest chance of success.
Instructions,
1. Turn on your 360 and then navigate to the "System Settings" tab under the MY XBOX heading.
2. Enter the "Memory" settings tab
3. Press "Y" (yellow button) at the screen where you select your Hard Drive (Device Options)
4. A screen will pop up that has the choices "Rename" and "Format". Do not choose either, instead press the following button combination: X-X-Left Upper Bumper-Right Upper Bumper-X-X
5. A screen will come up asking you whether you would like to carry out a maintenance on your XBOX 360 Storage device. Choose "Yes", the process should be brief. This basically is a way to clear out the cache in your 360, think of it like clearing the history and cookies in your PC or Laptop.
6. Once the process is complete sign off your xbox-live account.
7. Return to the "System Settings" tab except this time you will choose "Console Settings"
8. Select "Clock", then choose "Date and Time" (Notice: this option will be unavailable unless you are logged off XBOX Live!)
9. Revert your clock to the date of 11/15/2005 at 12:00AM (Do not worry, this settings will revert upon logging back into Xbox LIVE)
10. Once you have accomplished that log back into Xbox LIVE and try to run your BF 1943 Game
