HP ZBook Firefly 16 inch G11 - 2. Examine the environment; 3. Perform a visual inspection of hardware

Table 7-5 Failure classification by hardware devices
4. Display 5. I/O devices 6. Storage 7. Mechanical
1. Display anomalies on
page 110
2. Dead pixel on page 112
3. No video (internal) on
page 112
d
4. No video (external) on
page 112
d
5. DisplayPort/VGA on
page 113
6. HDMI on page 113
7. No or bad external video
via docking on page 114
8. Incorrect or missing
color/distorted image on
page 114
9. Touch screen on page
115
1. Keyboard on page 116
2. Keyboard pointing stick
(select products only) on
page 117
3. Keyboard backlight on
page 118
4. Touchpad on page 118
5. Network connectivity
(RJ-45 jack) on page 119
6. Network connectivity
wireless (WLAN) on page
119
7. WWAN on page 120
8. USB on page 120
9. Smart card reader on
page 121
10. Speaker, headphone -
audio issues on page
122
11. Thunderbolt (TB) on
page 123
1.
Hard drive or solid-state
drive not recognized on
page 125
2. No boot to operating
system (no read-write
error) on page 126
3. Read-write error on
page 127
4. Slow performance on
page 128
c
5. Blue screen (BSOD)
error on page 128
b
6. Noisy hard drive on page
128
1. Noise (sound) on page
129
2. Fan runs constantly on
page 130
3. Thermal shutdown (hot)
on page 131
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.
2. Examine the environment
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