HP ZBook 17 Maintenance and Service Guide - Page 151

USB, Symptoms, Possible causes, Troubleshooting steps

Page 151 highlights

USB Items Symptoms ● USB devices are not recognized ● USB devices are not charging Examples of USB device Not Recognized Procedures Possible causes USB devices do not have the latest software drivers, port insufficient power, or not compliant. NOTE: USB Type-C uses a different connector entirely Troubleshooting steps 1. Unplug USB device and/or restart the computer (wait for 2-5 minutes) to reset USB port/hub in case of power surge. 2. Soft Reset (9. Soft reset (Default Settings) on page 103) and verify if USB device is recognized. 3. Verify if USB device is recognized in Device Manager > Universal Serial Bus Controller, or USB is recognized without Yellow bang. 4. Verify if the latest USB driver or/and USB chipset driver are installed. USB driver could be removed and reinstalled. 5. Make sure USB device is supported, for example, USB 3.0 device requires more power drawn (0.9A) from USB port than USB 2.0 device (0.5A). As a result, identify USB charging port to be used for charging a USB device, or an external AC power adapter may be required for an external USB storage to work properly. 6. Test with verified working USB devices (keyboard, mouse, USB key) to make sure USB ports are functional. 7. Test USB device on a verified working computer to make sure USB device is not malfunctioning. Common issues and possible solutions 137

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USB
Items
Procedures
Symptoms
USB devices are not recognized
USB devices are not charging
Possible causes
USB devices do not have the latest software drivers, port
insufficient
power, or not
compliant.
NOTE:
USB Type-C uses a
different
connector entirely
Examples of USB device Not Recognized
Troubleshooting steps
1.
Unplug USB device and/or restart the computer (wait for 2-5 minutes) to reset USB
port/hub in case of power surge.
2.
Soft Reset (
9. Soft reset (Default Settings)
on page
103
) and verify if USB device is
recognized.
3.
Verify if USB device is recognized in
Device Manager > Universal Serial Bus
Controller
, or USB is recognized without Yellow bang.
4.
Verify if the latest USB driver or/and USB chipset driver are installed. USB driver
could be removed and reinstalled.
5.
Make sure USB device is supported, for example, USB 3.0 device requires more
power drawn (0.9A) from USB port than USB 2.0 device (0.5A). As a result, identify
USB charging port to be used for charging a USB device, or an external AC power
adapter may be required for an external USB storage to work properly.
6.
Test with
verified
working USB devices (keyboard, mouse, USB key) to make sure
USB ports are functional.
7.
Test USB device on a
verified
working computer to make sure USB device is not
malfunctioning.
Common issues and possible solutions
137