The red LED blinks to represent the major error category (long blinks). The white LED blinks to represent the
minor error category (short blinks). For example, 3.5 indicates 3 long red blinks and 5 short white blinks to
communicate the processor is not detected.
Table 6-2 Interpreting blink codes
Component tested Major/minor code Error condition
Battery 1.2 System battery discharge is switching from the external battery to the
internal battery.
BIOS 2.2 The main area (DXE) of BIOS has become corrupted and there is no recovery
binary image available
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)
*
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 dGPU over temperature condition has been detected.
System board 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, i.e., end of POST.
*
Indicates hardware triggered event; all other events are controlled by the BIOS.
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