HP ZBook Studio G3 Maintenance and Service Guide - Page 79

Failure classification by boot-up sequence, Table 7-3

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A single symptom can be listed under different groups. For example, No Video can belong to (1) Power-on or (4) Display; but Flickering when powered should be listed in (4) Display. Or, in another example, a blue screen can be caused by a driver conflict in Performance (4), but it can also be caused by a defective storage device under (6) Storage. Therefore, failures that share similar symptoms are noted.. If possible, make a record of the failure symptom, the phase of the boot-up sequence where the failure occurs, and the most likely location in the failure tree (Table 7-3 Failure classification by boot-up sequence on page 65 and Table 7-4 Failure classification by hardware devices and mechanical on page 66). This will help isolate the issue and indicate the next steps. For example, when the computer is running the operating system, it may experience an issue with (4) Display, (5) I/O devices (keyboard, wireless, and so on), (6) Storage, or (7) Mechanical components (stuck buttons, thermal shutdown, and so on). NOTE: "Uncategorized" is used if an issue found is not listed. For example, Bluetooth is offered on certain hardware configurations; therefore, a Bluetooth issue can be classified under "I/O Device" if needed. Failure classification by boot-up sequence Table 7-3 Failure classification by boot-up sequence 1. Power-on 2. POST 1. No Power on page 82 2. Intermittent power-on, shutdown, reboot on page 84a 1. No video (with power) on page 88 2. Blinking lights on page 89 3. AC adapter issue on page 85 3. Diagnostics error messages 4. Battery not recognized, not charging on page 90 on page 86 4. BIOS password on page 91 5. Battery discharges too fast on page 87 6. Burnt smell on page 88 a,b,c similar symptoms 3. Performance 1. Intermittent shutdown on page 92a 2. Blue screen (BSOD) error on page 117b 3. Freeze at Windows Logo (hang/lockup) on page 95 4. Electromagnetic Interference (EMI) on page 96 5. No wake up on page 97 6. Unresponsive on page 98 7. Slow performance on page 98c 8. HP Smart Adapter warning message on page 99 9. Incorrect time and date on page 99 General troubleshooting steps 65

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A single symptom can be listed under
different
groups. For example, No Video can belong to (1) Power-on or
(4) Display; but Flickering when powered should be listed in (4) Display. Or, in another example, a blue screen
can be caused by a driver
conflict
in Performance (4), but it can also be caused by a defective storage device
under (6) Storage. Therefore, failures that share similar symptoms are noted..
If possible, make a record of the failure symptom, the phase of the boot-up sequence where the failure
occurs, and the most likely location in the failure tree (
Table
7
-
3
Failure
classification
by boot-up sequence
on page
65
and
Table
7
-
4
Failure
classification
by hardware devices and mechanical
on page
66
). This will
help isolate the issue and indicate the next steps. For example, when the computer is running the operating
system, it may experience an issue with (4) Display, (5) I/O devices (keyboard, wireless, and so on), (6)
Storage, or (7) Mechanical components (stuck buttons, thermal shutdown, and so on).
NOTE:
“Uncategorized” is used if an issue found is not listed. For example, Bluetooth is
offered
on certain
hardware
configurations;
therefore, a Bluetooth issue can be
classified
under “I/O Device” if needed.
Failure
classification
by boot-up sequence
Table 7-3
Failure
classification
by boot-up sequence
1. Power-on
2. POST
3. Performance
1.
No Power
on page
82
2.
Intermittent power-on, shutdown,
reboot
on page
84
a
3.
AC adapter issue
on page
85
4.
Battery not recognized, not charging
on page
86
5.
Battery discharges too fast
on page
87
6.
Burnt smell
on page
88
1.
No video (with power)
on page
88
2.
Blinking lights
on page
89
3.
Diagnostics error messages
on page
90
4.
BIOS password
on page
91
1.
Intermittent shutdown
on page
92
a
2.
Blue screen (BSOD) error
on page
117
b
3.
Freeze at Windows Logo (hang/lockup)
on page
95
4.
Electromagnetic Interference (EMI)
on page
96
5.
No wake up
on page
97
6.
Unresponsive
on page
98
7.
Slow performance
on page
98
c
8.
HP Smart Adapter warning message
on page
99
9.
Incorrect time and date
on page
99
a,b,c
similar symptoms
General troubleshooting steps
65