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Solving Front Panel Component Problems - HP Z4 G4 Maintenance And Service Manual

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Solving front panel component problems

If you encounter problems with devices connected to the front panel, refer to the common causes and
solutions listed in the following table.
A USB device, headphone, or microphone is not recognized by the computer.
Cause
Device is not properly connected.
The device does not have power.
The correct device driver is not installed.
The cable from the device to the computer does not work.
The device is not working.
62
Chapter 6 Troubleshooting without diagnostics
Solution
1.
Turn off the computer.
2.
Reconnect the device to the front of the computer and
restart the computer.
If the USB device requires AC power, be sure one end is connected
to the device and one end is connected to a live outlet.
1.
Install the correct driver for the device.
2.
You might need to reboot the computer.
1.
If possible, replace the cable.
2.
Restart the computer.
1.
Replace the device.
2.
Restart the computer.

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