K450 - Unknown Device in Device Manager

Runing Windows 8.1 64bit.
On Lenovo solution center, keep show one unknown device in device manager.
It does not show any unknown device even with show hidden devices option turn on.
On USBView, it shows xHCL port 13-14 has General Failure:
[Port13] GeneralFailure
---===>Device Information<===---
ConnectionStatus: GeneralFailure
Current Config Value: 0x00 -> Device Bus Speed: Low
Device Address: 0x00
Open Pipes: 0
*!*ERROR: No open pipes!
===>Device Descriptor<===
*!*ERROR: bLength of 0 incorrect, should be 18
bLength: 0x00
bDescriptorType: 0x00
bcdUSB: 0x0000
bDeviceClass: 0x00
*!*ERROR: Device enumeration failure
Does anyone know how to fix it?
Thanks

hi ktmcmo,
Are all the USB 2.0/3.0 ports in the front/back part working fine?
Some other steps that you can try:
1. Download and run Nirsoft's USBDeview v2.27 (download here)
2. Create a System Restore point
3. On the USBDeview interface, right click on the USB controller/hub that's giving you the General Failure error and try to disconnect/uninstall or disable the device and observe if you still get the same error on USBView/Lenovo Solutions Center.
- Link to picture
4. If same issue occurs, undo the changes that you have made in Step 3 and make a create a registry backup. On the USBdeview interface, right click again on the USB controller/hub that's giving you the General Failure and choose Open in RegEdit. In the registry, delete the registry key and/or subkey of the failing device and reboot (Windows will automatically re-install the device using the inbox driver).
- Link to picture
Note:
Only do Step 4 if you have a backup copy of your files and have created a system restore point / registry backup.
Regards
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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