HP ZBook 17 G3 Maintenance And Service Manual page 9

7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ........................................................................................................................ 85
Resolve the issue ............................................................................................................................... 88
8. Hard reset .................................................................................................................... 88
9. Soft reset (Default Settings) ....................................................................................... 89
10. Reseat cables and connections ................................................................................ 89
11. Test with minimum configuration ............................................................................ 90
12. Test with verified working configuration (hardware and/or operating system) ..... 91
13. Replace the system board ........................................................................................ 91
Verify solution ................................................................................................................................... 92
Helpful Hints ........................................................................................................................................................ 92
At startup ........................................................................................................................................... 92
During operation ............................................................................................................................... 93
Consulting with HP Service ............................................................................................................... 93
Common issues and possible solutions .............................................................................................................. 94
Power-on issues ................................................................................................................................ 94
No Power ......................................................................................................................... 94
Intermittent power-on, shutdown, reboot ..................................................................... 96
AC adapter issue .............................................................................................................. 97
Battery not recognized, not charging ............................................................................. 97
Battery discharges too fast ............................................................................................ 99
Burnt smell .................................................................................................................... 100
POST ................................................................................................................................................ 100
No video (with power) ................................................................................................... 100
Blinking lights ............................................................................................................... 101
Diagnostics error messages ......................................................................................... 102
BIOS password .............................................................................................................. 103
Performance (OS) ............................................................................................................................ 103
Intermittent shutdown ................................................................................................. 104
Blue screen .................................................................................................................... 105
Freeze at Windows Logo (hang/lockup) ....................................................................... 107
Electromagnetic Interference (EMI) .............................................................................. 108
HP Image Diagnostic Tool ............................................................................. 84
HP Thermal Monitor ..................................................................................... 84
Non HP diagnostics tools ............................................................................. 84
Status lights .................................................................................................. 85
Blinking light codes ...................................................................................... 86
POST error messages ................................................................................... 86
Power Good (Troubleshooting) lights .......................................................... 87
Essential hardware configuration ................................................................ 90
Safe mode ..................................................................................................... 91
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