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Diagnostic Lights
The four diagnostic indicator lights on the system front panel display error codes during system startup. Table 1 lists the causes and possible corrective actions associated with these codes. A highlighted circle indicates the light is on; a
Table 1. Diagnostic Indicator Codes
Code | Causes | Corrective Action |
The system is in a normal off condition or a possible
The diagnostic lights are not lit after the system successfully boots to the operating system.
Plug the system into a working electrical outlet and press the power button.
The system is in a normal | Information only. |
operating condition |
|
after POST. |
|
BIOS checksum failure | See "Getting Help" on page 157. |
detected; system is in |
|
recovery mode. |
|
Possible processor failure. | See "Troubleshooting Processors" |
| on page 144. |
Memory failure. | See "Troubleshooting System |
| Memory" on page 137. |
Possible expansion card | See "Troubleshooting Expansion |
failure. | Cards" on page 142. |
Possible video failure. | See "Getting Help" on page 157. |
About Your System
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