Microsoft Xbox 360 Troubleshooting page 3

If this does not fix the problem, try the next solution.
Solution 7: Reinstall the latest Xbox 360 system update
To reinstall the latest Xbox 360 update, follow these steps:
1. Clear the system cache. To do this, see the
2. Roll back and then reinstall system updates. To do this:
a. Press the Guide button on your controller.
b. Go to settings and select System.
c. Select Storage.
d. Enter the following button sequence: X, LB, RB, X, LB, RB, X.
e. Select the option to roll back all system updates that are installed. The console will
restart automatically and then download the updates again.
3. Reset your network hardware. Here's how:
a. Unplug the power cable from the back of the router, modem, or gateway. If you have a
router and a modem, unplug the power cable from both devices.
b. Turn off your Xbox 360 console by pressing the power button on the front of the
console.
c. Wait 5 minutes.
d. If you're using a router, plug in the router and wait for all the lights to return to their
normal state.
e. Plug in the rest of your hardware and try to connect to Xbox Live.
If this does not fix the problem, see the next solution.
Solution 8: Request a repair
If you've tried all the solutions on this page but are still experiencing the problem, your console
may need to be repaired. You can submit an online repair request at
"Clear the system cache" section above.
Device Support.