Diagnostics
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.
O
• 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 o.
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 o indicating no memory or RAM is detected.
The following table shows dierent light patterns, what they indicate, and the
suggested solutions.
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
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