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Repeated USB Device Not Recognized Error Message - No USB Device Attached

Pavilion 15z-cw100
Microsoft Windows 10 (64-bit)

I am receiving repeated "USB Device Not Recognized" error messages even though no USB device is connected to the computer.  I went into device manager and altered the power management of each USB Hub/USB Root Hub.  Within device manager there is an entry describing "Unknown USB Device (Device Descriptor Request Failed).

Within that Device (Port_#0001.Hub_#0001) the status reads

"Windows has stopped this device because it has reported problems. (Code 43) A request for the USB device descriptor failed"

To be clear: NOTHING is attached to the computer other than the power cable.


Please let me know how to fix this -- the error messages repeat and are very intrusive.


Thank you.


HP Support Agent
HP Support Agent
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Repeated USB Device Not Recognized Error Message - No USB Device Attached

@Who-SB Welcome to HP Community!


I understand that you are getting USB Device Not Recognized Error Message.


Do not worry. I will try to fix the issue.


Please perform the USB test and confirm the hardware issue or driver's issue.


1. Power off the PC and make sure that it is completely powered off.

2. Press the power button and the moment you press the power button immediately start tapping F2 key, you should see the system diagnostics screen.

3. Look for the component test, under that all the hardware will be listed, please choose Keyboard and initiate the quick test.

Note: If it fails it will generate a 24 digits alphanumeric failure id, please capture that.


Keep us posted,

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Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

Have a great day!

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