This section details the diagnostic features of the battery LED in a laptop.
Instead of beep codes errors are indicated via the bicolor Battery
Charge LED. A specific blink pattern is followed by flashing a
pattern of flashes in green, followed by white. The pattern then
repeats.
NOTE The diagnostic pattern will consist of a two digit number being
represented by a first group of LED blinks (1 through 9) in green,
followed by a 1.5 second pause with the LED off, and then a second
group of LED blinks (1 through 9) in white. This is then followed
by a 3 second pause, with the LED off, before repeating over
again. Each LED blink takes 0.5 seconds.
The system will not shutdown when displaying the Diagnostic Error
Codes. Diagnostic Error Codes will always supersede any other use of the
LED. For instance, on laptops, battery codes for Low Battery or
Battery Failure situations will not be displayed when Diagnostic
Error Codes are being displayed:
Table 1. LED patternThe table describes the LED pattern that will allow you to identify the issues.
Blinking pattern
Problem Description
Suggested Resolution
Green
White
2
1
processor
Processor failure
2
2
system board, BIOS ROM
System board, covers BIOS corruption or ROM error
2
3
memory
No memory/no RAM detected
2
4
memory
Memory failure/RAM failure
2
5
memory
Invalid memory installed
2
6
system board; chipset
System board/ chipset error
2
7
display
Display failure
3
1
RTC power failure
Coin-cell battery failure
3
2
PCI/Video
PCI/Video card/chip failure
3
3
BIOS recovery 1
Recovery image not found
3
4
BIOS recovery 2
Recovery image found but invalid
3
5
Power Rail Failure
EC ran into power sequencing failure
3
6
SBIOS Flash Corruption
Flash corruption detected by SBIOS
3
7
ME Error
Timeout waiting on ME to reply to HECI message
Data is not available for the Topic
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