Table 7-7  Blinking light codes and what they mean
Blink codes Error
Amber battery light: blinks 1 Hz continuously Embedded controller unable to load rmware
Caps and num lk lights = 1 blink Processor not executing code
Caps and num lk lights = 2 blinks BIOS recovery code unable to nd 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 nd valid BIOS Boot Block image
Caps and num lk lights = 8 blinks Sure Start has identied a problem (Manual Recovery Policy Set)
POST error messages
The Power-On Self-Test (POST) is a series of diagnostic tests that runs automatically when the computer is 
turned 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 errors encountered during HP PC Hardware Diagnostics (UEFI).
Table 
7-8  System diagnostics failure codes and actions to address the failure
Test description Failure description Error code Suggested user actions
Startup Test Memory module 200 Attempt to reseat the memory module, and then repeat the test.
For details on troubleshooting issues related to the memory 
module, search for support documentation at http://www.hp.com/
support.
Startup Test Hard Disk 1 SMART 301 Attempt to reseat the hard drive, and repeat the test. The hard 
drive may have failed.
Boot Device Manager Boot device not found 3F0 Reset BIOS. Then reseat the hard drive, and repeat the test.
BIOS Recovery BIOS Recovery Occurred 500 This message indicates that BIOS recovery was completed 
successfully. No further action is required.
BIOS Application BIOS Application Error 501 The BIOS installation may have become corrupted. Download the 
latest version of the BIOS and install it.
If reinstalling the BIOS fails, contact support for further assistance.
ENWW General troubleshooting steps 113