Mechanical; Noise (Sound); Fan Runs Constantly - HP ZBook Fury 17 G7 Maintenance And Service Manual

Mechanical

Use this information to troubleshoot mechanical issues.

Noise (sound)

Use this information to troubleshoot abnormal noise issues.
Table 7-50 Issues, possible causes, and fixes
Items
Symptoms
Computer emits abnormal noise
Noisy fan
Noisy hard drive
Noisy optical drive
Noisy speaker
Noisy display
The section below is intended for authorized service providers and technicians.

Fan runs constantly

Use this information to troubleshoot a constantly running fan.
164 Chapter 7 Troubleshooting guide
Procedures
Possible causes
Aside from basic components (power adapter, supply, fan, speaker, hard drive, optical drive,
display panel, external devices), it is also common for electronic components to produce noise.
Troubleshooting steps
1. Inspect external power source and change to verified working one.
2. Determine whether the noise comes from AC power adapter. Test with a verified working
AC adapter.
Disconnect external devices and all cables connected to the computer to isolate issue to
computer only.
Determine whether the noise comes from the fan. Disconnect the fan briefly to isolate whether
noise originates from fan. If noise is absent with fan disconnected, see
on page 164.
Determine whether the noise comes from the hard drive.
See Noisy hard drive on page 162.
1. Determine whether the noise comes from an optical drive.
2. Remove CD/DVD from the optical drive.
1. Determine whether the noise comes from speaker.
2. Test with a verified working external headset/speaker.
Determine whether the noise comes from display panel (humming noise). Change display
frequency settings. See Display on page
1. After disassembling the chassis, inspect components of the interior for excessive wear or
damage.
2. If noise issues persist, proceed with process of elimination for battery, AC adapter, or
boards.
Fan runs constantly
142.
ENWW