if your question refers to the 1 green light then your xbox is telling you that 1 remote is connected to it
Call 1-800-4-my-xbox
It has a ring, but if theres more than 1 ring that's bad your disc is scratched, make sure your xbox 360 is not tilted while playing.
Get a Ps3
You buy a new xbox
means hardware failure
Call Xbox and get it repaired!
It is more commonly known as the "Red Ring of Death", and occurs on the Xbox 360. It's a system failure, and has a 33% chance of occurring on your system. But if it does happen, call 1-800-4-MY-XBOX (1-800-469-9269) and they will walk you through the process on how they can repair your console.
The Xbox WHAT? They haven't come out with that yet!
You get a cooler for the back of the xbox
xbox over heating
Call 1-800-4-my-xbox, they will help you with your problems.
http://editorials.teamxbox.com/xbox/1651/The-Red-Ring-of-Death/p1/