"USB Device not recognized" but no USB devices attached

The USB hardware and device handling is built into Windows and integrated right in. Windows provides the USB interface.

I have not seen the above message and it appears something has gone wrong with your system.

  1. Run a full scan with Windows Defender to check for viruses.

  2. Get your manufacturer's Hardware Diagnostic App and check for hardware errors.

  3. If no hardware errors, back up your data and then Reset Windows (reinstall Windows) to return to its initial state, update it and restore your data.