HP ZBook 15u G5

Blinking lights ............................................................................................................... 112
Diagnostics error messages ......................................................................................... 113
BIOS password .............................................................................................................. 114
Performance (OS) ............................................................................................................................ 114
Intermittent shutdown ................................................................................................. 115
Blue screen .................................................................................................................... 116
Freeze at Windows Logo (hang/lockup) ....................................................................... 118
Electromagnetic Interference (EMI) .............................................................................. 119
No wake up .................................................................................................................... 120
Unresponsive ................................................................................................................ 121
Slow performance ......................................................................................................... 121
HP Smart Adapter warning message ........................................................................... 122
Incorrect time and date ................................................................................................ 122
Display ............................................................................................................................................. 123
Display anomalies ......................................................................................................... 123
Symptom .................................................................................................... 123
Quick check ................................................................................................. 124
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 124
Display assembly diagram ......................................................................... 125
Dead pixel ..................................................................................................................... 125
No video (internal) ........................................................................................................ 125
No video (external) ....................................................................................................... 126
DisplayPort/VGA ........................................................................................................... 126
HDMI .............................................................................................................................. 126
No or bad external video via docking ........................................................................... 127
Incorrect or missing color/distorted image .................................................................. 127
Touch screen ................................................................................................................. 128
I/O devices ....................................................................................................................................... 129
Keyboard ....................................................................................................................... 129
Keyboard point stick ..................................................................................................... 130
Keyboard backlight ....................................................................................................... 130
TouchPad ....................................................................................................................... 131
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 131
Network connectivity wireless (WLAN) ........................................................................ 132
WWAN ............................................................................................................................ 133
USB ................................................................................................................................ 134
Smart card reader ......................................................................................................... 135
Speaker, headphone - audio issues .............................................................................. 136
Thunderbolt (TB) ........................................................................................................... 137
Storage ............................................................................................................................................ 138
Hard drive/solid-state drive not recognized ................................................................ 139
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