The infamous Red LED lights that surround the 360's power button actually represent different problems depending on how many are alight. One red light meant a hardware failure. Two red lights signify overheating. Three red lights meant a general hardware failure, and four red lights meant and AV cable error. The notorious "Red Ring of Death" is actually, contrary to it's name, a 3-Light problem (General Hardware Failure).
Contributed by PirateGoofy
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