HP EliteDesk 800 G6 Maintenance and Service Guide - Page 104

Interpreting POST diagnostic front panel lights and audible codes continued, Table 7-3

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Table 7-3 Interpreting POST diagnostic front panel lights and audible codes (continued) Category Major/minor code Description 2.4 The embedded controller is checking or recovering the boot block. Hardware 3.2 The embedded controller has timed out waiting for BIOS to return from memory initialization. 3.3 The embedded controller has timed out waiting for BIOS to return from graphics initialization. 3.4 The system board displays a power failure (crowbar).* 3.5 The processor is not detected.* 3.6 The processor does not support an enabled feature. Thermal 4.2 A processor over temperature condition has been detected.* 4.3 An ambient temperature over temperature condition has been detected. 4.4 An MXM over temperature condition has been detected. System board 5.2 The embedded controller cannot find valid firmware. 5.3 The embedded controller has timed out waiting for the BIOS. 5.4 The embedded controller has timed out waiting for BIOS to return from system board initialization. 5.5 The embedded controller rebooted the system after a possible lockup condition had been detected through the use of a System Health Timer, Automated System Recovery Timer, or other mechanism. * Indicates hardware triggered event; all other events are controlled by the BIOS. 94 Chapter 7 POST error messages

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Table 7-3
Interpreting POST diagnostic front panel lights and audible codes (continued)
Category
Major/minor code
Description
2.4
The embedded controller is checking or recovering the boot block.
Hardware
3.2
The embedded controller has timed out waiting for BIOS to return
from memory initialization.
3.3
The embedded controller has timed out waiting for BIOS to return
from graphics initialization.
3.4
The system board displays a power failure (crowbar).*
3.5
The processor is not detected.*
3.6
The processor does not support an enabled feature.
Thermal
4.2
A processor over temperature condition has been detected.*
4.3
An ambient temperature over temperature condition has been
detected.
4.4
An MXM over temperature condition has been detected.
System board
5.2
The embedded controller cannot
find
valid
firmware.
5.3
The embedded controller has timed out waiting for the BIOS.
5.4
The embedded controller has timed out waiting for BIOS to return
from system board initialization.
5.5
The embedded controller rebooted the system after a possible
lockup condition had been detected through the use of a System
Health Timer, Automated System Recovery Timer, or other
mechanism.
* Indicates hardware triggered event; all other events are controlled by the BIOS.
94
Chapter 7
POST error messages