Performance (OS) ............................................................................................................................ 110
Intermittent shutdown .................................................................................................  111
Blue screen .................................................................................................................... 112
Freeze at Windows Logo (hang/lockup) .......................................................................  114
Electromagnetic Interference (EMI) .............................................................................. 115
No wake up .................................................................................................................... 116
Unresponsive ................................................................................................................  117
Slow performance ......................................................................................................... 117
HP Smart Adapter warning message ...........................................................................  118
Incorrect time and date ................................................................................................  118
Display ............................................................................................................................................. 119
Display anomalies ......................................................................................................... 119
Symptom ....................................................................................................  119
Quick check ................................................................................................. 120
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 120
Display assembly diagram .........................................................................  121
Dead pixel .....................................................................................................................  121
No video (internal) ........................................................................................................  121
No video (external) .......................................................................................................  122
DisplayPort/VGA ...........................................................................................................  122
HDMI .............................................................................................................................. 122
No or bad external video via docking ...........................................................................  123
Incorrect or missing color/distorted image ..................................................................  123
Touch screen .................................................................................................................  124
I/O devices .......................................................................................................................................  125
Keyboard ....................................................................................................................... 125
Keyboard point stick .....................................................................................................  126
Keyboard backlight .......................................................................................................  126
TouchPad ....................................................................................................................... 127
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 127
Network connectivity wireless (WLAN) ........................................................................  128
WWAN .............................................................................................................................. 48
USB ................................................................................................................................ 130
Smart card reader ...........................................................................................................  69
Speaker, headphone - audio issues .............................................................................. 132
Thunderbolt (TB) ........................................................................................................... 133
Storage ............................................................................................................................................  134
Hard drive/solid-state drive not recognized ................................................................  135
No boot to operating system (no read/write error) .....................................................  135
Read-write error ...........................................................................................................  136
Slow performance ......................................................................................................... 136
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