Category
Major/minor code
Description
BIOS
2.2
The main area (DXE) of BIOS has become corrupted and there is no recovery
binary image available.
2.3
The embedded controller policy requires the user to enter a key sequence.
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.
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Chapter 9 POST error messages and diagnostic front panel LEDs and audible codes
