HP ZBook 17 Maintenance and Service Guide - Page 151
USB, Symptoms, Possible causes, Troubleshooting steps
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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