HP ZBook 17 Maintenance and Service Guide - Page 130

Items Note Procedures 2. See Status, Blinking Lights, and Error Message (7. Status lights, blinking light codes, troubleshooting lights, and POST error messages on page 99) for corrective actions. 3. If internal hardware components (memory, hard drive, etc.) have been recently added, a component may not be connected properly. Remove and reseat new components (10. Reseat cables and connections on page 103) one at a time. Since the display may not be functional, lights are used to indicate an error. Diagnostics error messages Items Symptoms ● Computer has power ● POST error message displays (Windows logo has not yet appeared) Procedures Possible causes Diagnostic error messages indicate a problem. There may be a problem with the instruction being sent from the BIOS to a hardware component (e.g., keyboard failures), or incompatible hardware. Can usually be resolved by installing updated firmware for the component. Troubleshooting steps 1. See 7. Status lights, blinking light codes, troubleshooting lights, and POST error messages on page 99 for corrective actions. An example of a POST error message is shown below. Note 2. If there is power, you may be able to access BIOS. Reset BIOS to its default condition. (9. Soft reset (Default Settings) on page 103) 3. Restore hardware to its original condition (i.e., bootable solid-state drive instead of hard drive). 4. Reseat suspected components and verify connection. 5. Test suspected components using HP PC Hardware Diagnostics (UEFI) tool. An Error Message means the system has finished BIOS hardware validation and is ready to launch the Startup Menu. To access the Startup Menu for further options, press the Esc key while restarting the computer. 116 Chapter 7 Troubleshooting guide