Maintenance and Service Guide

Battery discharges too fast .......................................................................................... 113
Burnt smell .................................................................................................................... 114
POST ................................................................................................................................................ 114
No video (with power) ................................................................................................... 114
Blinking lights ............................................................................................................... 115
Diagnostics error messages ......................................................................................... 116
BIOS password .............................................................................................................. 117
Performance (OS) ............................................................................................................................ 117
Intermittent shutdown ................................................................................................. 118
Blue screen .................................................................................................................... 119
Freeze at Windows Logo (hang/lockup) ....................................................................... 121
Electromagnetic Interference (EMI) .............................................................................. 122
No wake up .................................................................................................................... 123
Unresponsive ................................................................................................................ 124
Slow performance ......................................................................................................... 124
HP Smart Adapter warning message ........................................................................... 125
Incorrect time and date ................................................................................................ 125
Display ............................................................................................................................................. 126
Display anomalies ......................................................................................................... 126
Symptom .................................................................................................... 126
Quick check ................................................................................................. 127
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 127
Display assembly diagram ......................................................................... 128
Dead pixel ..................................................................................................................... 128
No video (internal) ........................................................................................................ 128
No video (external) ....................................................................................................... 129
DisplayPort/VGA ........................................................................................................... 129
HDMI .............................................................................................................................. 129
No or bad external video via docking ........................................................................... 130
Incorrect or missing color/distorted image .................................................................. 130
Touch screen ................................................................................................................. 131
I/O devices ....................................................................................................................................... 132
Keyboard ....................................................................................................................... 132
Keyboard point stick ..................................................................................................... 133
Keyboard backlight ....................................................................................................... 133
TouchPad ....................................................................................................................... 134
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 134
Network connectivity wireless (WLAN) ........................................................................ 135
WWAN ............................................................................................................................ 136
USB ................................................................................................................................ 137
Smart card reader ......................................................................................................... 138
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