HP Elite Dragonfly 13.5 Maintenance and Service Guide - Page 69

can experience an issue with 4 display, 5 I/O devices keyboard, wireless, and so on, 6 storage, or 7

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● Storage ● Mechanical 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 turned on 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 hard drive 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 6-4 Failure classification by boot-up sequence on page 60 and Table 6-5 Failure classification by hardware devices on page 60). This record helps isolate the issue and indicate the next steps. For example, when the computer is running the operating system, it can 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, you can classify a Bluetooth issue under I/O Device if needed. Failure classification by boot-up sequence Use this table to locate failure classification information. Table 6-4 Failure classification by boot-up sequence 1. Power-on 2. POST 3. Performance 1. No power on page 74 1. No video (with power) on page 81 2. Intermittent power-on, shutdown, reboot on page 76a 3. AC adapter issue on page 77 2. Blinking lights on page 82 3. Diagnostic error messages on page 82 4. Battery not recognized, not charging 4. BIOS password on page 83 on page 78 5. Battery discharges too fast on page 79 6. Burnt smell on page 80 1. Intermittent shutdown on page 84a 2. Blue screen on page 85b 3. Freeze at Windows Logo (hang or lockup) on page 87 4. Electromagnetic Interference (EMI) on page 88 5. No wake up on page 88 6. Unresponsive on page 89 7. Slow performance on page 90c 8. HP Smart Adapter warning message on page 90 a,b,c similar symptoms 9. Incorrect time and date on page 91 Failure classification by hardware devices To determine failure by device, use this table. Table 6-5 Failure classification by hardware devices 4. Display 5. I/O devices 1. Display anomalies on page 92 1. Keyboard on page 98 6. Storage 1. Hard drive or solid-state drive not recognized on page 107 7. Mechanical 1. Noise (sound) on page 110 60 Chapter 6 Troubleshooting guide

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●
Storage
●
Mechanical
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 turned on 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 hard drive 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 6-4
Failure
classification
by boot-up sequence
on page
60
and
Table 6-5
Failure
classification
by hardware devices
on page
60
). This record helps isolate
the issue and indicate the next steps. For example, when the computer is running the operating system, it
can 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, you can classify a Bluetooth issue under I/O Device if needed.
Failure classification by boot-up sequence
Use this table to locate failure classification information.
Table 6-4
Failure classification by boot-up sequence
1. Power-on
2. POST
3. Performance
1.
No power
on page
74
2.
Intermittent power-on, shutdown,
reboot
on page
76
a
3.
AC adapter issue
on page
77
4.
Battery not recognized, not charging
on page
78
5.
Battery discharges too fast
on page
79
6.
Burnt smell
on page
80
1.
No video (with power)
on page
81
2.
Blinking lights
on page
82
3.
Diagnostic error messages
on
page
82
4.
BIOS password
on page
83
1.
Intermittent shutdown
on page
84
a
2.
Blue screen
on page
85
b
3.
Freeze at Windows Logo (hang or lockup)
on page
87
4.
Electromagnetic Interference (EMI)
on
page
88
5.
No wake up
on page
88
6.
Unresponsive
on page
89
7.
Slow performance
on page
90
c
8.
HP Smart Adapter warning message
on
page
90
9.
Incorrect time and date
on page
91
a,b,c
similar symptoms
Failure classification by hardware devices
To determine failure by device, use this table.
Table 6-5
Failure classification by hardware devices
4. Display
5. I/O devices
6. Storage
7. Mechanical
1.
Display anomalies
on
page
92
1.
Keyboard
on page
98
1.
Hard drive or solid-state
drive not recognized
on
page
107
1.
Noise (sound)
on page
110
60
Chapter 6
Troubleshooting guide