HP ZBook Studio G3 Mobile Workstation - Maintenance and Service Guide

7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ........................................................................................................................ 72
Status lights .................................................................................................. 72
Interpreting system validation diagnostic front panel LEDs and
audible codes ................................................................................................ 73
POST error messages ................................................................................... 74
Power Good (Troubleshooting) lights .......................................................... 75
Resolve the issue ............................................................................................................................... 76
8. Hard reset .................................................................................................................... 76
9. Soft reset (Default Settings) ....................................................................................... 77
10. Reseat cables and connections ................................................................................ 77
11. Test with minimum conguration ............................................................................ 78
Essential hardware conguration ................................................................ 78
Safe mode ..................................................................................................... 79
12. Test with veried working conguration (hardware and/or operating system) ..... 79
13. Replace the system board ........................................................................................ 79
Verify solution ................................................................................................................................... 80
Helpful Hints ........................................................................................................................................................ 80
At startup ........................................................................................................................................... 80
During operation ............................................................................................................................... 81
Consulting with HP Service ............................................................................................................... 82
Common issues and possible solutions .............................................................................................................. 82
Power-on issues ................................................................................................................................ 82
No Power ......................................................................................................................... 82
Intermittent power-on, shutdown, reboot ..................................................................... 84
AC adapter issue .............................................................................................................. 85
Battery not recognized, not charging ............................................................................. 86
Battery discharges too fast ............................................................................................ 87
Burnt smell ...................................................................................................................... 88
POST .................................................................................................................................................. 88
No video (with power) ..................................................................................................... 88
Blinking lights ................................................................................................................. 89
Diagnostics error messages ........................................................................................... 90
BIOS password ................................................................................................................ 91
Performance (OS) .............................................................................................................................. 91
Intermittent shutdown ................................................................................................... 92
Blue screen ...................................................................................................................... 93
Freeze at Windows Logo (hang/lockup) ......................................................................... 95
Electromagnetic Interference (EMI) ................................................................................ 96
No wake up ...................................................................................................................... 97
Unresponsive .................................................................................................................. 98
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