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 module or RAM is detected.
The following table shows different light patterns,
what they indicate, and the suggested solutions.
Table 1. System light
problems and possible solutionsThe following shows the light patterns and suggested
solutions.
Light Pattern
Problem description
Suggested solution
2,1
CPU failure
Replace the system board.
2,2
System board: BIOS and ROM failure
Flash latest BIOS version. If problem persists,
replace the system board.
2,3
No memory module or RAM detected
Confirm that the memory module is installed properly.
If problem persists, replace the memory module.
2,4
Memory module or RAM failure
Replace the memory module.
2,5
Invalid memory module installed
Replace the memory module.
2,6
System board or chipset error
Replace the system board.
2,7
LCD failure
Replace the LCD.
3,1
CMOS battery failure
Replace the CMOS battery.
3,2
PCI or video card or chip failure
Replace the CMOS battery.
3,3
Recovery image not found
Reimage the system.
3,4
Recovery image found but invalid
Reimage the system.
The computer may emit a series of beeps during start-up
if the errors or problems cannot be displayed. The repetitive beep
codes help the user troubleshoot problems with the computer.
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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