HP ZBook Studio x360 Maintenance and Service Guide - Page 97
Blinking light codes, POST error messages, Table 6-5
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Blinking light codes During startup, the computer may not boot properly. If this occurs, blinking light codes that will help identify what is causing the issue. The computer uses the blinking lights below to identify a hardware component that reports an error during startup. For more information, see Blinking lights and boot error codes on page 133. Table 6-5 Boot-error codes Blink codes Error Amber battery light: blinks 1 Hz continuously Embedded controller unable to load firmware Caps/num lock lights = 1 blink Processor not executing code Caps/num lock lights = 2 blinks BIOS recovery code unable to find valid BIOS recovery image Caps/num lock lights = 3 blinks Memory module error Caps/num lock lights = 4 blinks Graphics controller error Caps/num lock lights = 5 blinks System board error Caps/num lock lights = 6 blinks Intel Trusted Execution Technology (TXT) Error Caps/num lock lights = 7 blinks Sure Start unable to find valid BIOS Boot Block image Caps/num lock lights = 8 blinks Sure Start has identified 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 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 errors encountered during HP PC Hardware Diagnostics (UEFI). Table 6-6 System diagnostics failure codes and user actions 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. General troubleshooting steps 85