Users Guide

Troubleshooting your system
You can troubleshoot your system using indicators like diagnostic lights, and error messages during the operation of the device.
Topics:
• Power states and LED behavior
• Diagnostic power LED codes
• Power LED error code behavior
Power states and LED behavior
Table 16. Power states and LED behavior
States Behavior
Indicators
● Power LED: Bicolor, White / Amber
● Power state:
○ S0–On: Power LED solid white
○ S5 – Off: Power LED off
● Operation State:
○ BIOS Post: Power LED solid white
○ In OS: Power LED solid white
Power button control
● Force Off-state: Push and hold power button is >= 4
seconds
Diagnostic power LED codes
Table 17. Diagnostic power LED codes (continued)
Power LED light status Possible cause Troubleshooting steps
At first power apply: No LED light up
briefly
Both power LED and activity LED come
up briefly and then turn off.
● Check AC power, call your utility
company.
● Check that AC power cord is
plugged-in.
● Check that DC plug is plugged into
the unit.
At first power apply: Both LEDs stay ON Both power LED and activity LED come
up briefly and then turn off.
● Logic board defect
● BIOS malfunctioning
● Abnormal power source
Push power button the LED does not
turn
● Power LED should come up in steady
Blue.
● Activity LED should turn on in steady
Amber.
● Logic board defect
● Power button defect
● Mechanical assembly misaligned;
causes miss actuation.
LED comes up normally but no display BIOS screen is displayed after few
seconds.
● Incompatible monitor
● Defect logic board
● Malfunction dongle (if used)
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Troubleshooting your system 61