HP ZBook 15u G5 Maintenance And Service Manual page 11

Mechanical ....................................................................................................................................... 142
Additional information ...................................................................................................................................... 146
Acronyms ......................................................................................................................................... 146
Blinking lights and boot error codes ............................................................................................... 147
POST Error Messages and User Actions .......................................................................................... 149
Routine Maintenance for Performance Improvement .................................................................... 152
Common Blue Screen Error Messages ............................................................................................ 152
Use Windows Debugging Tool ......................................................................................................... 153
Display Issue: Pixel Anomalies ........................................................................................................ 158
Cable management ......................................................................................................................... 159
Connector types .............................................................................................................................. 160
9 Computer Setup (BIOS), TPM, and HP Sure Start ........................................................................................... 162
Using Computer Setup ....................................................................................................................................... 162
Starting Computer Setup ................................................................................................................ 162
Navigating and selecting in Computer Setup ................................................................................. 162
Restoring factory settings in Computer Setup ............................................................................... 163
Updating the BIOS ........................................................................................................................... 163
No boot to operating system (no read/write error) ..................................................... 139
Read-write error ........................................................................................................... 140
Slow performance ......................................................................................................... 140
Blue screen (BSOD) error .............................................................................................. 140
Noisy hard drive ............................................................................................................ 141
Fan error message - 90B .............................................................................................. 142
Noise (sound) ................................................................................................................ 143
Fan runs constantly ...................................................................................................... 144
Thermal shutdown (hot) ............................................................................................... 145
Stuck power button ...................................................................................................... 145
Processor not executing code ...................................................................................... 147
BIOS recovery code unable to find valid BIOS recovery image ..................................... 147
Memory module error ................................................................................................... 147
Graphics Controller Error (No Controller) ..................................................................... 148
Failure - System Board Error ........................................................................................ 148
Intel Trusted Execution Technology (TXT) Error .......................................................... 148
Sure Start unable to find valid BIOS Boot Block image ................................................ 148
Sure Start has identified a problem (Manual Recovery Policy Set) .............................. 149
Error message list ......................................................................................................... 152
Bug check symbolic names ........................................................................................... 152
Microsoft general troubleshooting of Windows bug check codes ............................... 153
Windows Software Development Kit (SDK) .................................................................. 154
Using a USB keyboard or USB mouse to start Computer Setup (BIOS) ........................ 162
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