Diagnostic Lights

Diagnostic Lights

The four diagnostic indicator lights on the system front panel display error codes during system startup. Table 1-5 lists the causes and possible corrective actions associated with these codes. A highlighted circle indicates the light is on; a non-highlighted circle indicates the light is off.

NOTE: If the power LEDs blink amber, there is a problem with the power supply. If the power LED shows a solid amber, a BIOS failure occurred before Power-On Self Test (POST).

Table 1-5. Diagnostic Indicator Codes

Code

Causes

Corrective Action

The computer is in a normal off condition or a possible pre-BIOS failure has occurred.

The diagnostic lights are not lit after the system successfully boots to the operating system.

Plug the computer 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 137.

 

 

 

detected; system is in

 

 

 

recovery mode.

 

 

 

 

 

 

Possible processor failure. See "Troubleshooting the

 

 

 

Microprocessor" on page 125.

 

 

 

 

 

 

Memory failure.

See "Troubleshooting System

 

 

 

Memory" on page 114.

 

 

 

 

 

 

Possible expansion card

See "Troubleshooting Expansion

 

 

failure.

Cards" on page 123.

18

About Your System

Page 18
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Dell T105 owner manual Diagnostic Lights, Corrective Action, The system is in a normal, operating condition after