HP EliteBook 735 G5 Maintenance And Service Manual page 85

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.
Major/
Component minor
tested code
BIOS 2.2 The main area (DXE) of BIOS has
become corrupted and there is
2.3 The embedded controller policy
requires the user to enter a key
2.4 The embedded controller is
recovering the boot block or
DXE. Since it takes 10 sec. or so
to load the DXE image and get
video in the DXE case, this blink
code is necessary. (SureStart)
Hardware 3.2 The embedded controller has
timed out waiting for BIOS to
3.3 The embedded controller has
timed out waiting for BIOS to
initialization ( 4/13- Graphics
3.4 The system board displays a
System 5.2 The embedded controller cannot
board
5.3 The embedded controller has
timed out waiting for the BIOS
Error condition
no recovery binary image
available
sequence (SureStart 2.0)
return from memory
initialization
return from graphics
adaptor not found)
power failure (crowbar) *
find valid firmware
Notebook
Caps
Lock/Num
Lock LED Desktop
CAP/NUM 2.2 - Power
Blink = 2 LED
(red.white)
CAP/NUM 2.3 - Power
Blink = 8 LED
(red.white)
Battery LED 2.4 - Power
White and LED
Amber (red.white)
blinking
CAP/NUM 3.2 - Power
Blink = 3 LED
(red.white)
CAP/NUM 3.3 - Power
Blink = 4 LED
(red.white)
CAP/NUM 3.4 - Power
Blink = 5 LED
(red.white)
CAP/NUM 5.2 - Power
Blink = 7 (2 LED
BB failure) (red.white)
Battery LED
Blinking = 1
Hz (3 B
failure)
CAP/NUM Not
Blink = 1 implemented
Action
Follow the Crisis Recovery instructions at
http://support.hp.com/us-en/document/
c02693833/.
If analysis of the event that caused Sure
Start recovery is desired, replace the
board and send the bad board back.
Otherwise, press this key combination to
restore BIOS and boot: Up Arrow+ Down
Arrow+ Esc.
Wait for DXE recovery to complete.
System board replacement.
If the system has an MXM module, try a
different MXM module. Otherwise, the
board most likely needs to be replaced.
System board replacement.
System board replacement.
System board replacement.
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