No wake up .................................................................................................................... 108
Unresponsive ................................................................................................................  110
Slow performance ......................................................................................................... 110
HP Smart Adapter warning message ...........................................................................  111
Incorrect time and date ................................................................................................  111
Display ............................................................................................................................................. 112
Display anomalies ......................................................................................................... 112
Symptom ....................................................................................................  112
Quick check ................................................................................................. 113
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 113
Display assembly diagram .........................................................................  114
Dead pixel .....................................................................................................................  114
No video (internal) ........................................................................................................  114
No video (external) .......................................................................................................  115
DisplayPort/VGA ...........................................................................................................  115
HDMI .............................................................................................................................. 115
No or bad external video via docking ...........................................................................  116
Incorrect or missing color/distorted image ..................................................................  116
Touch screen .................................................................................................................  117
I/O devices .......................................................................................................................................  118
Keyboard ....................................................................................................................... 118
Keyboard point stick .....................................................................................................  119
Keyboard backlight .......................................................................................................  119
TouchPad ....................................................................................................................... 120
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 120
Network connectivity wireless (WLAN) ........................................................................  121
WWAN ............................................................................................................................ 122
USB ................................................................................................................................ 123
Smart card reader .........................................................................................................  124
Speaker, headphone - audio issues .............................................................................. 125
Thunderbolt (TB) ........................................................................................................... 126
Storage ............................................................................................................................................  127
Hard drive/solid-state drive not recognized ................................................................  128
No boot to operating system (no read/write error) .....................................................  128
Read-write error ...........................................................................................................  129
Slow performance ......................................................................................................... 129
Blue screen (BSOD) error ..............................................................................................  129
Noisy hard drive ............................................................................................................  130
Mechanical ....................................................................................................................................... 131
Fan error message - 90B ..............................................................................................  131
Noise (sound) ................................................................................................................ 132
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