HP ZBook 14U G5 Maintenance And Service Manual page 9

Analyze the issue ............................................................................................................................... 89
5. Remove or uninstall recently added hardware, software .......................................... 89
6. HP Hardware Diagnostics and Tools ........................................................................... 90
7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ........................................................................................................................ 94
Resolve the issue ............................................................................................................................... 97
8. Hard reset .................................................................................................................... 97
9. Soft reset (Default Settings) ....................................................................................... 98
10. Reseat cables and connections ................................................................................ 98
11. Test with minimum configuration ............................................................................ 99
12. Test with verified working configuration (hardware and/or operating system) ... 100
13. Replace the system board ...................................................................................... 100
Verify solution ................................................................................................................................. 101
Helpful Hints ...................................................................................................................................................... 101
At startup ........................................................................................................................................ 102
During operation ............................................................................................................................. 102
Consulting with HP Service ............................................................................................................. 103
Common issues and possible solutions ............................................................................................................ 103
Power-on issues .............................................................................................................................. 103
No Power ....................................................................................................................... 103
Intermittent power-on, shutdown, reboot ................................................................... 105
AC adapter issue ........................................................................................................... 107
Battery not recognized, not charging ........................................................................... 107
Battery discharges too fast .......................................................................................... 109
Burnt smell .................................................................................................................... 110
POST ................................................................................................................................................ 110
No video (with power) ................................................................................................... 110
Manually updating BIOS and drivers ............................................................ 89
Remotely deploying BIOS and drivers .......................................................... 89
HP PC Hardware Diagnostics (UEFI) ............................................................. 90
HP Support Assistant (HPSA) ....................................................................... 92
HP BIOS Configuration Utility (BCU) ............................................................. 93
HP Image Diagnostic Tool ............................................................................. 93
HP Thermal Monitor ..................................................................................... 93
Non HP diagnostics tools ............................................................................. 93
Status lights .................................................................................................. 94
Blinking light codes ...................................................................................... 95
POST error messages ................................................................................... 95
Power Good (Troubleshooting) lights .......................................................... 96
Essential hardware configuration ................................................................ 99
Safe mode ................................................................................................... 100
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