WS–Workstations
OS–Operating system
PC–Personal computer
POST–Power-On Self-Test
SSD–Solid-state drive
TSG–Troubleshooting Guide
UEFI–Unified Extensible Firmware Interface
WLAN–Wireless local area network
WWAN–Wireless wide area network
Blinking lights and boot error codes
In some cases, when the host processor is not executing code or does not have the necessary code to drive the
display, light blink codes inform you of a problem.
The following information is from the white paper
http://h10032.www1.hp.com/ctg/Manual/c04685655
.
Table 7-54
Blinking lights and boot error codes
Blink codes
Error
Amber battery light: blinks 1 Hz continuously
Embedded Controller unable to load firmware
Caps and num lk lights = 1 blink
Processor not executing code
Caps and num lk lights = 2 blinks
BIOS recovery code unable to find valid BIOS recovery image
Caps and num lk lights = 3 blinks
Memory module error
Caps and num lk lights = 4 blinks
Graphics controller error
Caps and num lk lights = 5 blinks
System board error
Caps and num lk lights = 6 blinks
Intel Trusted Execution Technology (TXT) Error
Caps and num lk lights = 7 blinks
Sure Start unable to find valid BIOS Boot Block image
Caps and num lk lights = 8 blinks
Sure Start has identified a problem (Manual Recovery Policy Set)
Processor not executing code
This computer experienced a problem due to the failure of certain code to execute, resulting in a failed startup
of the processor.
The issue could be related to the processor or the system board in the computer. If the processor is socketed,
be sure that the processor is seated correctly in the socket. If this error reoccurs, see
NOTE:
The computer attempts to notify you of this problem through a series of blinking lights. When you
attempt to turn on the computer from an Off or Hibernated state, lights associated with the
caps lock
and
num lk
keys both blink once, followed by a pause, and then continue in a repeating pattern.
Blinking lights and boot error codes
125
