System diagnostic lights
Battery-status light
Indicates the power and battery-charge status.
Solid white
— Power adapter is connected and the battery has more than 5 percent charge.
Amber
— Computer is running on battery and the battery has less than 5 percent charge.
Off
●
Power adapter is connected, and the battery is fully charged.
●
Computer is running on battery, and the battery has more than 5 percent charge.
●
Computer is in sleep state, hibernation, or turned off.
The battery-status light blinks amber along with beep codes indicating failures.
For example, the battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by
a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
Table 15. LED codes
Diagnostic light codes
(Amber, white)
Problem description
1,1
TPM detection failure
1,2
Unrecoverable SPI flash failure
2,1
Processor failure
2,2
System board: BIOS or Read-Only Memory
(ROM) failure
2,3
No memory or Random-Access Memory (RAM)
detected
2,4
Memory or Random-Access Memory (RAM)
failure
2,5
Invalid memory installed
2,6
System-board or chipset error
2,7
Display failure - SBIOS message
2,8
Display failure - EC detection of power rail
failure
3,1
CMOS battery failure
3,2
PCI, video card/chip failure
3,3
BIOS recovery image not found
3,4
Recovery image found but invalid
3,5
Power-rail failure
3,6
System BIOS Flash incomplete
3,7
Management Engine (ME) error
4,1
Memory power-rail failure
Camera status light:
Indicates whether the camera is in use.
●
Solid white — Camera is in use.
●
Off — Camera is not in use.
Caps Lock status light:
Indicates whether Caps Lock is enabled or disabled.
●
Solid white — Caps Lock enabled.
●
Off — Caps Lock disabled.
Troubleshooting
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