HP ZBook Studio G4 Base Model Mobile Workstation User Manual Page 87
- Page / 182
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Component
tested
Major/
minor
code Error condition
Caps
Lock/Num
Lock LED Action
BIOS 2.2 The main area (DXE) of BIOS has
become corrupted and there is no
recovery binary image available
CAP/NUM Blink
= 2
Contact service for system board replacement.
2.3 The embedded controller policy
requires the user to enter a key
sequence (SureStart 2.0)
CAP/NUM Blink
= 8
Perform SureStart manual recovery if boot
block: Up Arrow + Down Arrow + ESC.
2.4 The embedded controller is
recovering the boot block or DXE.
Battery LED
White and
Amber
blinking
Wait for DXE recovery to complete.
Hardware 3.2 The embedded controller has timed
out waiting for BIOS to return from
memory initialization
CAP/NUM Blink
= 3
Reseat the memory modules. If the issue
persists, try replacing the memory modules.
Possible RAM or system board failure.
3.3 The embedded controller has timed
out waiting for BIOS to return from
graphics initialization
CAP/NUM Blink
= 4
If the system has an MXM module, try a
dierent MXM module. Otherwise, the board
most likely needs to be replaced.
3.4 The system board displays a power
failure (crowbar)
CAP/NUM Blink
= 5
Check power cable connections, or verify that
any external power adapter has sucient
capacity for system.
System board 5.2 The embedded controller cannot nd
valid rmware
CAP/NUM Blink
= 7 (2 BB
failure)
Battery LED
Blinking = 1 Hz
(3 B failure)
Contact service for system board replacement.
5.3 The embedded controller has timed
out waiting for the BIOS
CAP/NUM Blink
= 1
Contact service for system board replacement.
POST error messages
The Power-On Self-Test (POST) is a series of diagnostic tests that runs automatically when the computer is
powered on. If the POST encounters a problem, visual error messages are displayed before the operating
system starts. POST checks the following items to ensure that the computer system is functioning properly:
●
Memory
●
Processors
●
BIOS
●
Mass storage devices
●
Fans
The following table describes key Post Error messages. For more detailed information, see POST Error
Messages and User Actions on page 130.
General troubleshooting steps 75
- Maintenance and Service Guide 1
- Safety warning notice 5
- Table of contents 7
- 1 Product description 13
- 2 Components 17
- 6 Chapter 2 Components 18
- Display 7 19
- Keyboard area 20
- Keyboard area 9 21
- 10 Chapter 2 Components 22
- Special keys 23
- Action keys 24
- Bottom 13 25
- 14 Chapter 2 Components 26
- Component 27
- (2) Product number 27
- (3) Serial number 27
- (4) Warranty period 27
- 3 Illustrated parts catalog 28
- Computer major components 17 29
- Computer major components 19 31
- Bracket Kit 33
- Plastics Kit 34
- Miscellaneous parts 34
- Miscellaneous parts 23 35
- Tools required 36
- Service considerations 36
- Grounding guidelines 37
- Bottom cover 41
- Solid-state drive (M.2) 43
- WLAN module 45
- Memory module 47
- RTC battery 49
- Thermal module 50
- Description Spare part number 53
- Fingerprint reader board 54
- LED board 55
- Display cable 57
- System board 58
- I/O support bracket 61
- Speakers 62
- Keyboard 63
- 4. Remove the keyboard (2) 64
- Display assembly 65
- Top cover 74
- 6 Troubleshooting guide 75
- Resources 76
- General troubleshooting steps 76
- Identify the issue 77
- 2. Examine the environment 79
- Analyze the issue 80
- Resolve the issue 90
- 13. Replace the system board 94
- Helpful Hints 95
- Consulting with HP Service 96
- Power-on issues 97
- AC adapter issue 100
- Battery discharges too fast 102
- Burnt smell 103
- No video (with power) 103
- Blinking lights 104
- Diagnostics error messages 105
- Performance (OS) 106
- Intermittent shutdown 107
- Blue screen 108
- No wake up 112
- Unresponsive 113
- Slow performance 113
- Incorrect time and date 114
- Display anomalies 115
- Dead pixel 117
- No video (internal) 117
- No video (external) 118
- DisplayPort/VGA 118
- Touch screen 120
- I/O devices 121
- Keyboard point stick 122
- Keyboard backlight 122
- TouchPad 123
- Smart card reader 127
- Thunderbolt (TB) 129
- Thunderbolt 3 dock 130
- Read-write error 133
- Blue screen (BSOD) error 133
- Noisy hard drive 134
- Mechanical 135
- Noise (sound) 136
- Fan runs constantly 137
- Thermal shutdown (hot) 138
- Additional information 139
- Processor not executing code 140
- Memory module error 141
- Failure - System Board Error 141
- Additional information 131 143
- Error message list 144
- Bug check symbolic names 144
- Use Windows Debugging Tool 145
- 6. Open the crash dump le 148
- Lookup for Bug Check 0xC2 149
- Additional information 137 149
- Cable management 151
- Connector types 152
- Using Computer Setup 154
- Updating the BIOS 155
- Downloading a BIOS update 156
- Using Windows tools 161
- Restore and recovery 162
- 10 Specications 166
- Nonvolatile memory usage 171
- Questions and answers 173
- 13 Recycling 178
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