Hi,
One of the reasons why this issue occur is because the currently loaded USB driver has become unstable or corrupt. To resolve this, we suggest that you follow the step by step solutions provided below:
- Uninstall and then reconnect the external hard drive
- Open Device Manager.
- Select Disk Drives from the list of hardware
- Press and hold (or right-click) the USB external hard drive with the issue, and select Uninstall.
- After the hard drive is uninstalled, unplug the USB cable.
- Wait for 1 minute and then reconnect the USB cable. The driver should automatically load
- Check for the USB drive in Windows Explorer
- Reinstall USB controllers.
- Open Device Manager.
- Expand Universal Serial Bus controllers. Press and hold (or right-click) a device and select Uninstall. Repeat for each device.
- Once complete, restart your computer. Your USB controllers will automatically install.
- Run Windows USB Troubleshooter.
Please update us on the result.
Regards.