Solving Front Panel Component Problems - HP Pro 3400 Maintenance And Service Manual

USB flash drive not found (identified).
Cause
The device is attached to a USB port that has been hidden in
Computer Setup.
The device was not properly seated before power-up.
System will not boot from USB flash drive.
Cause
Boot order is not correct.
Removable Media Boot is disabled in the Computer Setup
utility.
The computer boots to DOS after making a bootable flash drive.
Cause
Flash drive is bootable.

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.
Table D-17
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.
172 Appendix D Troubleshooting Without Diagnostics
Solving Front Panel Component Problems
Solution
Run the Computer Setup utility and ensure that "Device
available" is selected for "Front USB Ports" and "Rear USB
Ports" under Security > Device Security.
Ensure the device is fully inserted into the USB port before
applying power to the system
Solution
Run the Computer Setup utility and change boot sequence in
Storage > Boot Order.
Run the Computer Setup utility and enable booting to
removable media in Storage > Storage Options. Ensure
USB is enabled in Storage > Boot Order.
Solution
Install the flash drive only after the operating system boots.
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.