Power Lamp:
On: The system is on and running by the AC adapter or battery.
Off: The system is turned off or in Hibernates.
Blinking: The system is in the standby mode.
AC Adapter Lamp
On: The AC adapter is connected.
Off: The AC adapter is not connected.
Blinking: The battery is charged less than the low-battery limit.
If you try to turn on the system that has entered the Hibernates mode or been turned off after a low-battery alarm, the system will not be turned on but the lamp will blink three times.
Hard Disk Drive Indicator Lamp
The lamp is turned on when the HDD is running.
Do not turn off the power forcibly while the hard disk drive lamp is on or blinking. Otherwise, the disk or its data may get damaged.