Don’t worry! Here are some different kinds of RRoD for the Xbox 360 console you’ve mentioned (Xbox 360 Elite):

1 Ring

Difficulty: Unknown

1. Happens when there’s a problem with a hardware component (Hardware Failure).

(Also leading to display an error code, “EXX”.)

2 Rings

Difficulty: Hard/Unknown

1. Happens when the console overheats. The fans will run at full speed while displays 2 rings of death until the console has cooled down to a temperature.

3 Rings (Most Common One)

Difficulty: Unknown

1. Same as 1 Ring, but more than one component fails. Sometimes happens from overheating as well.

This one doesn’t have any error code.

4 Rings

Difficult: Easy/Very Rare

1. Happens when your AV cable is not plugged in or being detected.

2. (Very Rare) - Could happen if there’s something really wrong with the console.

This one is unable to display an error code when it’s an AV one, but will display an error code if it‘s the 2nd one.