Blinking Lights; Diagnostic Error Messages - HP ZBook Fury 17 G7 Maintenance And Service Manual

Table 7-15 Issues, possible causes, and fixes (continued)
Items
Tips

Blinking lights

Use this information to interpret blinking lights on the computer.
Table 7-16 Issues, possible causes, and fixes
Items
Symptoms
Lights blink on keyboard
lock keys
Note

Diagnostic error messages

Use the information in the table to help you understand diagnostic error messages.
ENWW
Procedures
1. Reseat display cable connection on system board.
2. Reseat display cable connection on display panel side.
3. Examine and reseat major components, such as hard drive and memory.
4. Test with minimum configuration
removing hard drive to isolate operating system issues and testing video in F10 Setup.
5. If video is present, restart and retest the computer.
6. If video is present but bad, go to
7. If issue persists (no video), test with external video.
8. If issue persists, test or replace a confirmed working display.
9. If issue persists, replace discrete graphics card.
10. If issue persists, replace system board because of defective video function.
Swipe a metal piece (screwdriver) over wireless or mute buttons to act as if closing lid to force
video output to external display device.
Procedures
Possible causes
caps lock/num Blinking lights on startup usually indicate a problem with basic functionality of a critical
component (processor, BIOS, graphics cards, memory, and so on) because of a loose
connection, defective parts, or recently added parts.
Troubleshooting steps
1. Check for any blink patterns. Count the number of blinks in a sequence, followed by a
pause for a few seconds.
2. See status, blinking lights, and error message
troubleshooting lights, and POST error messages on page
3. If internal hardware components (such as memory, hard drive) have been recently added,
a component may not be connected properly. Remove and reseat new components
Reseat cables and connections on page
Because the display might not be functional, lights are used to indicate an error.
(11. Test with minimum configuration on page
Display on page 142 section.
(7. Status lights, blinking light codes,
112) for corrective actions.
116) one at a time.
Common issues and possible solutions 133
118) by
(10.