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 or RAM is detected.
The following table shows different light patterns and what they indicate.
Table 1. DiagnosticsThe following table lists diagnostics 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/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.
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