HP Image Diagnostic Tool ...................................................................................................................................................................81
HP Thermal Monitor................................................................................................................................................................................. 81
Non HP diagnostics tools ....................................................................................................................................................................81
7. Status lights, blinking light codes, troubleshooting lights, and POST error messages ................................81
Status lights ..................................................................................................................................................................................................81
Blinking light codes.................................................................................................................................................................................82
POST error messages..........................................................................................................................................................................83
Resolve the issue............................................................................................................................................................................................................84
8. Hard reset............................................................................................................................................................................................................84
9. Soft reset (Default Settings)...................................................................................................................................................................85
10. Reseat cables and connections .......................................................................................................................................................85
11. Test with minimum configuration.......................................................................................................................................................86
Essential hardware configuration................................................................................................................................................86
Safe mode ......................................................................................................................................................................................................87
12. Test with verified working configuration (hardware or operating system)..........................................................87
13. Replace the system board......................................................................................................................................................................87
Verify solution....................................................................................................................................................................................................................88
Helpful Hints ..................................................................................................................................................................................................................................89
At startup..............................................................................................................................................................................................................................89
During operation .............................................................................................................................................................................................................89
Consulting with HP Service.....................................................................................................................................................................................90
Common issues and possible solutions...................................................................................................................................................................90
Power-on issues...............................................................................................................................................................................................................90
No power.....................................................................................................................................................................................................................91
Intermittent power-on, shutdown, reboot........................................................................................................................................... 93
AC adapter issue.................................................................................................................................................................................................94
Battery not recognized, not charging...................................................................................................................................................94
Battery discharges too fast..........................................................................................................................................................................97
Burnt smell ................................................................................................................................................................................................................97
POST ........................................................................................................................................................................................................................................98
No video (with power) .......................................................................................................................................................................................98
Blinking lights..........................................................................................................................................................................................................99
Diagnostic error messages.......................................................................................................................................................................100
BIOS password ...................................................................................................................................................................................................100
Performance (OS)..........................................................................................................................................................................................................101
Intermittent shutdown.....................................................................................................................................................................................101
Blue screen ............................................................................................................................................................................................................103
Freeze at Windows Logo (hang or lockup).......................................................................................................................................104
Electromagnetic Interference (EMI).....................................................................................................................................................105
No wake up.............................................................................................................................................................................................................106
Unresponsive.........................................................................................................................................................................................................107
Slow performance ............................................................................................................................................................................................108
HP Smart Adapter warning message.................................................................................................................................................108
Incorrect time and date ................................................................................................................................................................................109
Display...................................................................................................................................................................................................................................110
Display anomalies..............................................................................................................................................................................................110
Symptom .......................................................................................................................................................................................................110
Quick check.................................................................................................................................................................................................. 111
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