Blinking light codes
......................................................................................
56
POST error messages
...................................................................................
57
Resolve the issue
...............................................................................................................................
58
8. Hard reset
....................................................................................................................
58
9. Soft reset (Default Settings)
.......................................................................................
59
10. Reseat cables and connections
................................................................................
59
11. Test with minimum configuration
............................................................................
60
Essential hardware configuration
................................................................
60
Safe mode
.....................................................................................................
61
12. Test with verified working configuration (hardware or operating system)
.............
61
13. Replace the system board
........................................................................................
61
Verify solution
...................................................................................................................................
62
Helpful Hints
........................................................................................................................................................
62
At startup
...........................................................................................................................................
62
During operation
...............................................................................................................................
63
Consulting with HP Service
...............................................................................................................
64
Common issues and possible solutions
..............................................................................................................
64
Power-on issues
................................................................................................................................
64
No power
.........................................................................................................................
64
Intermittent power-on, shutdown, reboot
.....................................................................
66
AC adapter issue
..............................................................................................................
67
Battery not recognized, not charging
.............................................................................
68
Battery discharges too fast
............................................................................................
69
Burnt smell
......................................................................................................................
70
POST
..................................................................................................................................................
70
No video (with power)
.....................................................................................................
70
Blinking lights
.................................................................................................................
72
Diagnostic error messages
.............................................................................................
72
BIOS password
................................................................................................................
73
Performance (OS)
..............................................................................................................................
73
Intermittent shutdown
...................................................................................................
73
Blue screen
......................................................................................................................
75
Freeze at Windows Logo (hang or lockup)
......................................................................
75
Electromagnetic Interference (EMI)
................................................................................
76
No wake up
......................................................................................................................
76
Unresponsive
..................................................................................................................
77
Slow performance
...........................................................................................................
78
HP Smart Adapter warning message
..............................................................................
78
Incorrect time and date
...................................................................................................
79
Display
...............................................................................................................................................
79
Display anomalies
...........................................................................................................
79
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