HP ZBook 14U G5 Maintenance And Service Manual page 10

x
Blinking lights ............................................................................................................... 111
Diagnostics error messages ......................................................................................... 112
BIOS password .............................................................................................................. 113
Performance (OS) ............................................................................................................................ 113
Intermittent shutdown ................................................................................................. 114
Blue screen .................................................................................................................... 115
Freeze at Windows Logo (hang/lockup) ....................................................................... 117
Electromagnetic Interference (EMI) .............................................................................. 118
No wake up .................................................................................................................... 119
Unresponsive ................................................................................................................ 120
Slow performance ......................................................................................................... 120
HP Smart Adapter warning message ........................................................................... 121
Incorrect time and date ................................................................................................ 121
Display ............................................................................................................................................. 122
Display anomalies ......................................................................................................... 122
Symptom .................................................................................................... 122
Quick check ................................................................................................. 123
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 123
Display assembly diagram ......................................................................... 124
Dead pixel ..................................................................................................................... 124
No video (internal) ........................................................................................................ 124
No video (external) ....................................................................................................... 125
DisplayPort/VGA ........................................................................................................... 125
HDMI .............................................................................................................................. 125
No or bad external video via docking ........................................................................... 126
Incorrect or missing color/distorted image .................................................................. 126
Touch screen ................................................................................................................. 127
I/O devices ....................................................................................................................................... 128
Keyboard ....................................................................................................................... 128
Keyboard point stick ..................................................................................................... 129
Keyboard backlight ....................................................................................................... 129
TouchPad ....................................................................................................................... 130
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 130
Network connectivity wireless (WLAN) ........................................................................ 131
WWAN ............................................................................................................................ 132
USB ................................................................................................................................ 133
Smart card reader ......................................................................................................... 134
Speaker, headphone - audio issues .............................................................................. 135
Thunderbolt (TB) ........................................................................................................... 136
Storage ............................................................................................................................................ 137
Hard drive/solid-state drive not recognized ................................................................ 138