Status lights .................................................................................................. 73
Interpreting system validation diagnostic front panel LEDs and
audible codes ................................................................................................ 74
POST error messages ................................................................................... 75
Power Good (Troubleshooting) lights .......................................................... 77
8. Hard reset .................................................................................................................... 78
9. Soft reset (Default Settings) ....................................................................................... 80
10. Reseat cables and connections ................................................................................ 80
11. Test with minimum configuration ............................................................................ 80
At startup ........................................................................................................................................... 83
During operation ............................................................................................................................... 83
Consulting with HP Service ............................................................................................................... 84
No Power ......................................................................................................................... 85
Intermittent power-on, shutdown, reboot ..................................................................... 87
AC adapter issue .............................................................................................................. 88
Battery not recognized, not charging ............................................................................. 88
Battery discharges too fast ............................................................................................ 90
Burnt smell ...................................................................................................................... 91
No video (with power) ..................................................................................................... 91
Blinking lights ................................................................................................................. 92
Diagnostics error messages ........................................................................................... 93
BIOS password ................................................................................................................ 94
Intermittent shutdown ................................................................................................... 95
Blue screen ...................................................................................................................... 96
Freeze at Windows Logo (hang/lockup) ......................................................................... 98
Electromagnetic Interference (EMI) ................................................................................ 99
No wake up .................................................................................................................... 100
Unresponsive ................................................................................................................ 101
Slow performance ......................................................................................................... 101
HP Smart Adapter warning message ........................................................................... 102
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