Component
tested
Major/
minor
code
Error condition
Caps
Lock/Num
Lock LED
Action
BIOS
2.2
The main area (DXE) of BIOS has
become corrupted and there is no
recovery binary image available
CAP/NUM Blink
= 2
Contact service for system board replacement.
2.3
The embedded controller policy
requires the user to enter a key
sequence (SureStart 2.0)
CAP/NUM Blink
= 8
Perform SureStart manual recovery if boot
block: Up Arrow + Down Arrow + ESC.
2.4
The embedded controller is
recovering the boot block or DXE.
Battery LED
White and
Amber
blinking
Wait for DXE recovery to complete.
Hardware
3.2
The embedded controller has timed
out waiting for BIOS to return from
memory initialization
CAP/NUM Blink
= 3
Reseat the memory modules. If the issue
persists, try replacing the memory modules.
Possible RAM or system board failure.
3.3
The embedded controller has timed
out waiting for BIOS to return from
graphics initialization
CAP/NUM Blink
= 4
If the system has an MXM module, try a
different MXM module. Otherwise, the board
most likely needs to be replaced.
3.4
The system board displays a power
failure (crowbar)
CAP/NUM Blink
= 5
Check power cable connections, or verify that
any external power adapter has sufficient
capacity for system.
System board
5.2
The embedded controller cannot find
valid firmware
CAP/NUM Blink
= 7 (2 BB
failure)
Battery LED
Blinking = 1 Hz
(3 B failure)
Contact service for system board replacement.
5.3
The embedded controller has timed
out waiting for the BIOS
CAP/NUM Blink
= 1
Contact service for system board replacement.
POST error messages
The Power-On Self-Test (POST) is a series of diagnostic tests that runs automatically when the computer is
powered on. If the POST encounters a problem, visual error messages are displayed before the operating
system starts. POST checks the following items to ensure that the computer system is functioning properly:
●
Memory
●
Processors
●
BIOS
●
Mass storage devices
●
Fans
The following table describes key Post Error messages. For more detailed information, see
Messages and User Actions on page 130
General troubleshooting steps
75