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This chapter describes beep codes and system error messages that can occur during system start-up or, in the case of some failures, during normal com- puter operation. The tables in this chapter list faults that can cause a beep code or system error message to occur and the probable causes of the fault in each case.

If a faulty computer does not emit beep codes or display system error mes- sages to indicate a failure, you should load the diagnostics and run the appropriate tests to help isolate the source of the problem. See “Running the Dell Diagnostics” found later in this chapter.

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If the display cannot display error messages during POST, the computer may emit a series of beeps that identifies the problem or that can help you identify a faulty component or assembly. For example, one beep, a burst of three short beeps, and two more single beeps (beep code 1-3-1-1) means that the system has encountered a DRAM refresh error condition, probably caused by a faulty system board.

Table 3-1 lists the beep codes that may be generated during POST. Most beep codes indicate a fatal error that requires replacement of the main board or other corrective actions before the computer can operate.

Beep Codes and Error Messages 3-1