HP ZBook 15u - Page 10

No video (with power) ................................................................................................... 101
Blinking lights ............................................................................................................... 103
Diagnostics error messages ......................................................................................... 103
BIOS password .............................................................................................................. 104
Performance (OS) ............................................................................................................................ 104
Intermittent shutdown ................................................................................................. 105
Blue screen .................................................................................................................... 106
Freeze at Windows Logo (hang/lockup) ....................................................................... 108
Electromagnetic Interference (EMI) .............................................................................. 109
No wake up .................................................................................................................... 110
Unresponsive ................................................................................................................ 111
Slow performance ......................................................................................................... 111
HP Smart Adapter warning message ........................................................................... 111
Incorrect time and date ................................................................................................ 112
Display ............................................................................................................................................. 113
Display anomalies ......................................................................................................... 113
Symptom .................................................................................................... 113
Quick check ................................................................................................. 114
HP PC Hardware Diagnostics (UEFI) for video test ..................................... 114
Display assembly diagram ......................................................................... 114
Dead pixel ..................................................................................................................... 115
No video (internal) ........................................................................................................ 115
No video (external) ....................................................................................................... 116
DisplayPort/VGA ........................................................................................................... 116
HDMI .............................................................................................................................. 116
No or bad external video via docking ........................................................................... 117
Incorrect or missing color/distorted image .................................................................. 117
Touch screen ................................................................................................................. 118
I/O devices ....................................................................................................................................... 119
Keyboard ....................................................................................................................... 119
Keyboard point stick ..................................................................................................... 120
Keyboard backlight ....................................................................................................... 120
Touchpad ....................................................................................................................... 121
Network Connectivity Ethernet (RJ-45 jack) ................................................................ 121
Network connectivity wireless (WLAN) ........................................................................ 121
WWAN ............................................................................................................................ 122
USB ................................................................................................................................ 122
Smart card reader ......................................................................................................... 124
Speaker, headphone - audio issues .............................................................................. 125
Thunderbolt (TB) ........................................................................................................... 126
Storage ............................................................................................................................................ 127
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