Um well is the start up screen appearing? Is the normal xbox symbol red? If its red and you can't see the start up page you probably have the 'red ring.' No way to fix this unless you send it into xbox for repair or replacement. They will only repair it for free if you bought it less than a year ago. Believe me I've been there and done that twice.
You may have to log on to the xbox website and get it back.. or if you're signed out on the xbox... go to the home section and all the way to the right should be a recovery page.
Restart the game. If that doesn't work try restarting your xbox.
When a game freezes, try installing the game on your hard drive, this should help.
As soon as you see a loading screen it automatically saves
It basically cuts the loading time on the game etc...
The reason it's blinking green and orange is because it's loading
There are plenty of places in order for one to purchase the Xbox live gold membership. However, it is strongly recommended that one should order from the main website of Xbox.
it reduces loading times (slightly) and fixes small glitches.
The disks should be labled; disk 1 and disk 2. Insert disk 1. when it is done loading it should instruct you to put in disk 2. If the disks are not labled; one of the disks should have an install file, double click on it.
Installs it to your hardive. This means you will be able to play the game without the disk. It also reduces the loading speed as it loading from the hardrive and not from the actual disk. As a side note to some people: You cannot download a game to a ps2's hardrive.
Installing an Xbox 360 to your HDD improves loading times, removes disc noise and overall creates a smoother gaming experience. But you still need the disc in the Xbox 360 Console to play the game.
It should say "Matchmaking" just click that.