Troubleshooting
System diagnostic lights
Power and battery-status light
Indicates the power and battery-charge status.
Solid white
—Power adapter is connected and the battery has more than 5% charge.
Amber
—Computer is running on battery and the battery has less than 5% charge.
Off
●
Power adapter is connected, and the battery is fully charged.
●
Computer is running on battery, and the battery has more than 5% charge.
●
Computer is in sleep state, hibernation, or turned off.
The power and battery-status light blinks amber along with beep codes indicating failures.
For example, the power and 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 10. LED codes
Diagnostic light codes
Problem description
2,1
Processor failure
2,2
System board: BIOS or ROM (Read-Only
Memory) failure
2,3
No memory or RAM (Random-Access Memory)
detected
2,4
Memory or RAM (Random-Access Memory)
failure
2,5
Invalid memory installed
2,6
System-board or chipset error
2,7
Display failure
3,1
Coin-cell battery failure
3,2
PCI, video card/chip failure
3,3
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
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.
5
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Troubleshooting
