Power and battery-status light/ hard-drive activity light: Indicates the battery-charge status or the hard-drive activity.
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.
- 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 different light patterns and what they indicate.
|Light Pattern||Problem description|
|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|
|3,1||CMOS battery failure|
|3,2||PCI/video card failure|
|3,3||Recovery image not found|
|3,4||Recovery image found but invalid|
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.