Helpful Hints ......................................................................................................................................................................... 121
x
At startup .......................................................................................................................................................... 121
During operation ............................................................................................................................................. 121
Consulting with HP Service ............................................................................................................................ 122
Power-on issues .............................................................................................................................................. 124
No power ..................................................................................................................................... 124
AC adapter issue ......................................................................................................................... 127
Battery discharges too fast ....................................................................................................... 130
Burnt smell .................................................................................................................................. 130
POST .................................................................................................................................................................. 132
No video (with power) ................................................................................................................ 132
Blinking lights .............................................................................................................................. 133
Diagnostic error messages ....................................................................................................... 133
BIOS password ............................................................................................................................ 134
Performance (OS) ............................................................................................................................................ 135
Intermittent shutdown .............................................................................................................. 135
Blue screen .................................................................................................................................. 136
No wake up .................................................................................................................................. 138
Unresponsive .............................................................................................................................. 139
Slow performance ...................................................................................................................... 140
Incorrect time and date ............................................................................................................. 141
Display .............................................................................................................................................................. 142
Display anomalies ...................................................................................................................... 143
Symptom ................................................................................................................. 143
Quick check ............................................................................................................. 144
Dead pixel .................................................................................................................................... 145
No video (internal) ...................................................................................................................... 145
No video (external) ..................................................................................................................... 145
DisplayPort/VGA ......................................................................................................................... 146
HDMI ............................................................................................................................................. 146
Touch screen ............................................................................................................................... 148
ENWW