Examine The Environment; Perform A Visual Inspection Of Hardware - HP ZBook Power G10 Maintenance And Service Manual

Table 6-5 Failure classification by hardware devices
4. Display
1. Display anomalies on
page 105
2. Dead pixel on page 107
3. No video (internal) on
page 107
4. No video (external) on
page 107
5. DisplayPort/VGA on
page 108
6. HDMI on page 108
7. No or bad external video
via docking on page 109
8. Incorrect or missing
color/distorted image on
page 109
9. Touch screen on page
110
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.
72 Chapter 6 Troubleshooting guide
5. I/O devices
1. Keyboard on page 111
2. Keyboard pointing stick
(select products only) on
page 112
d 3. Keyboard backlight on
page 113
4. Touchpad on page 113
d
5. Network connectivity
(RJ-45 jack) on page 114
6. Network connectivity
wireless (WLAN) on page
114
7. WWAN on page 115
8. USB on page 115
9. Smart card reader on
page 116
10. Speaker, headphone -
audio issues on page
117
11. Thunderbolt (TB) on
page 118
6. Storage
1. Hard drive or solid-state
drive not recognized on
page 120
2. No boot to operating
system (no read-write
error) on page 121
3. Read-write error on
page 122
4. Slow performance on
c
page 123
5. Blue screen (BSOD)
b
error on page 123
6. Noisy hard drive on page
123
7. Mechanical
1. Noise (sound) on page
124
2. Fan runs constantly on
page 125
3. Thermal shutdown (hot)
on page 126