Troubleshooting Your Computer; Power Led; Single Diagnostic Led - Dell P29E Owner's Manual

Troubleshooting your computer

You can troubleshoot your computer using indicators like diagnostic lights, beep codes, and error messages during the operation of
the computer.

Power LED

Table 14. Power LED
• Hibernate or Suspend to Disk (S4).
Off
• Power is off (S5).
Solid System is in S0 state, the normal power state of a functioning machine. The BIOS will turn the LED to this state to
White indicate it has started fetching opcodes.
Blinking Turns on steadily or blinks to indicate battery charge status.
White
WARNING: The power LED only serve as an indicator of the progress through the POST process. This LEDs does not
indicate the problem that caused the POST routine to stop.

Single Diagnostic LED

This platform does not ship with legacy diagnostic LEDs which utilized the storage, power and wireless LED as a diagnostic LED. It is
now relying on the Battery LED light blinking amber/white pattern to determine failures listed in the following table.
NOTE: The blinking patterns will consist of 2 set of numbers being represented by (First Group:Amber blinks, Second
Group:White blinks)
• First Group : The LED blinks 1 to 9 times followed by a brief pause with LED off at the interval of 1.5 seconds. (This is in
Amber color)
• Second Group : The LED blinks 1 to 9 times, that would be then followed by a longer pause before the next cycle starts
again at the interval of 1.5 seconds. (This is in White color)
Example: No Memory detected (2,3), Battery LED blinks two times of amber color followed by a pause, and then blinks three times
of white color. The Battery LED will pause for 3 seconds before the next cycle repeat itself again.
Please see New Error Code Standardization
The following table depicts the amber and white blinking patterns with possible troubleshooting resolution:
Table 15. Single Diagnostic LED
Amber Blinking Pattern
2,1
2,2
2,3
2,4
48
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Problem Description
CPU
Motherboard:BIOS ROM
Memory
Memory
Suggested Resolution
CPU failure
Motherboard, covers BIOS corruption or
ROM error
No memory/RAM detected
Memory/RAM failure
5