Table 18. Power LED diagnostics
Amber LED state White LED state Description
o o system is OFF
o blinking system is in sleep state
blinking o power supply unit (PSU) failure
steady o PSU is working but failed to fetch code
o steady system is ON
Amber LED state Description
2,1 system board failure
2,2 system board, PSU or PSU cabling failure
2,3 system board, memory or CPU failure
2, 4 coin cell battery failure
2,5 corrupt BIOS
2,6 CPU conguration failure or CPU failure
2,7 memory modules are detected, but a memory failure
3,1 possible peripheral card or system board failure
3,2 possible USB failure
3,3 no memory modules are detected
3,4 possible system board error
3,5 memory modules are detected, but a memory conguration or compatibility error
3,6 possible system board resource and/or hardware failure
3,7 some other failure with messages on screen
Beep code
The computer can emit a series of beeps during start-up if the display does not show errors or problems. These series of beeps, called beep
codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is 3 sec, and the beep
sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will
jump out from looping and execute the normal shutdown process and power system.
Code
1-3-2
Cause Memory failure
Error messages
Error message
Description
Address mark not
found
The BIOS found a faulty disk sector or could not nd a particular disk sector.
38 Diagnostics
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