HP Thermal Monitor
.................................................................................................................................
65
Non HP diagnostics tools
.........................................................................................................................
65
7. Status lights, blinking light codes, troubleshooting lights, and POST error messages
.............................
65
Status lights
.............................................................................................................................................
65
Blinking light codes
..................................................................................................................................
66
POST error messages
...............................................................................................................................
67
Resolve the issue
.....................................................................................................................................................
68
8. Hard reset
.....................................................................................................................................................
68
9. Soft reset (Default Settings)
........................................................................................................................
69
10. Reseat cables and connections
.................................................................................................................
69
11. Test with minimum configuration
.............................................................................................................
70
Essential hardware configuration
............................................................................................................
70
Safe mode
................................................................................................................................................
71
12. Test with verified working configuration (hardware or operating system)
..............................................
71
13. Replace the system board
.........................................................................................................................
71
Verify solution
..........................................................................................................................................................
72
Helpful Hints
....................................................................................................................................................................
72
At startup
.................................................................................................................................................................
72
During operation
......................................................................................................................................................
73
Consulting with HP Service
......................................................................................................................................
74
Common issues and possible solutions
..........................................................................................................................
74
Power-on issues
.......................................................................................................................................................
74
No power
..........................................................................................................................................................
74
Intermittent power-on, shutdown, reboot
......................................................................................................
76
AC adapter issue
...............................................................................................................................................
77
Battery not recognized, not charging
..............................................................................................................
78
Battery discharges too fast
.............................................................................................................................
79
Burnt smell
.......................................................................................................................................................
80
POST
.........................................................................................................................................................................
81
No video (with power)
......................................................................................................................................
81
Blinking lights
..................................................................................................................................................
82
Diagnostic error messages
..............................................................................................................................
82
BIOS password
.................................................................................................................................................
83
Performance (OS)
.....................................................................................................................................................
83
Intermittent shutdown
....................................................................................................................................
84
Blue screen
.......................................................................................................................................................
85
Freeze at Windows Logo (hang or lockup)
.......................................................................................................
87
Electromagnetic Interference (EMI)
.................................................................................................................
88
No wake up
.......................................................................................................................................................
88
Unresponsive
...................................................................................................................................................
89
Slow performance
............................................................................................................................................
90
HP Smart Adapter warning message
...............................................................................................................
90
Incorrect time and date
....................................................................................................................................
91
Display
......................................................................................................................................................................
92
Display anomalies
............................................................................................................................................
92
Symptom
..................................................................................................................................................
92
Quick check
..............................................................................................................................................
93
HP PC Hardware Diagnostics (UEFI) for video test
..................................................................................
93
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