Examine The Environment; Perform A Visual Inspection Of Hardware - HP ZBook Fury G11 Maintenance And Service Manual

Table 7-5 Failure classification by hardware devices
4. Display
1. Display anomalies on
page 131
2. Dead pixel on page 133
3. No video (internal) on
page 133
4. No video (external) on
page 133
5. DisplayPort/VGA on
page 134
6. HDMI on page 134
7. No or bad external video
via docking on page 135
8. Incorrect or missing
color/distorted image on
page 135
9. Touch screen on page
136
b,c,d
similar symptoms

2. Examine the environment

It is important to examine the computer's environment. If you can quickly identify the cause of the issue,
fewer resolution steps might be needed. Perform the following environment inspections:
● Check all cables and connections to be sure that no connections are loose.
● Confirm that power sources are good, such as AC outlet or adapter (110 V/220 V ac), power strip.
Test with a verified working AC outlet.
● Check for compatibility issues between the computer and third-party devices, peripherals,
uncertified devices, incompatible hardware (for instance, Mac OS device). Incompatibility can result
in blue screen errors, improper operation, and so on.
● Isolate the computer from sources of electromagnetic interference (EMI), such as cell phones,
two-way radios, floor mats, fans (and other electronic motors). EMI may contribute to a display
freeze issue or lock-up.

3. Perform a visual inspection of hardware

Perform a physical inspection of the computer.
●
Look for abnormalities such as a cracked display, dented battery, broken latches for battery bay,
keyboard key caps popped out, dust over connectors, liquid spill over keyboard.
98 Chapter 7 Troubleshooting guide
5. I/O devices
1. Keyboard on page 137
2. Keyboard pointing stick
(select products only) on
page 138
d 3. Keyboard backlight on
page 139
4. Touchpad on page 139
d
5. Network connectivity
(RJ-45 jack) on page 140
6. Network connectivity
wireless (WLAN) on page
140
7. WWAN on page 141
8. USB on page 141
9. Smart card reader on
page 142
10. Speaker, headphone -
audio issues on page
143
11. Thunderbolt (TB) on
page 144
6. Storage
1. Hard drive or solid-state
drive not recognized on
page 146
2. No boot to operating
system (no read-write
error) on page 147
3. Read-write error on
page 148
4. Slow performance on
c
page 149
5. Blue screen (BSOD)
b
error on page 149
6. Noisy hard drive on page
149
7. Mechanical
1. Noise (sound) on page
150
2. Fan runs constantly on
page 151
3. Thermal shutdown (hot)
on page 152