Power and battery-status light/hard-drive activity light
Indicates the battery-charge status or the hard-drive activity.
NOTE Press Fn+H to toggle this light between power and battery-status light and hard-drive activity light.
Hard-drive activity light
Turns on when the computer reads from or writes to the hard drive.
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 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 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 the different power and battery-status light patterns and the problems that each light pattern indicates.
Table 1. Light patternsShows the different power and battery-status light patterns and the problems that each light pattern indicates.
Light pattern
Problem description
2,1
CPU failure
2,2
System board: BIOS and ROM failure
2,3
No memory or RAM detected
2,4
Memory or RAM failure
2,5
Invalid memory installed
2,6
System board or chipset error
2,7
LCD failure - SBIOS message
2,8
LCD failure - EC detection of power rail failure
3,1
CMOS battery failure
3,2
PCI or video card or chip failure
3,3
Recovery image not found
3,4
Recovery image found but invalid
3,5
Power rail failure
3,6
Flash corruption detected by SBIOS
3,7
Timeout waiting on ME to reply to HECI message
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.
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