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POST beep codes

Use this information to diagnose and resolve POST beep code errors.

A beep code is a combination of short or long beeps or a series of short beeps that are separated by pauses. For example, a "1-2-3" beep code is one short beep, a pause, two short beeps, a pause, and three short beeps. A beep code other than one beep indicates that POST has detected a problem. To determine the meaning of a beep code, see Beep code descriptions. If no beep code sounds, see No-beep symptoms.