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.
-
NOTE: Hard-drive activity
light is supported only on computers shipped with 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
-
NOTE: Hard-drive activity light is supported only on computers
shipped with hard drive.
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 light patterns
and describes what they indicate.
Table 1. Diagnostics.
The following table provides the different light patterns and
what they indicate.
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 |
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
|
SBIOS flash corruption |
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.