How to Fix Error Code 0X800701B1 on Windows 10

Some Windows 10 users regularly encounter error code 0x800701b1 (a non-existent device was specified) when trying to copy, paste or replace files using Explorer. This error code also appears when users try to install Windows 10 on a hard drive connected via a USB port.

This error code can be caused by several reasons, but some of the main reasons are inadequate USB 2.0 port, incompatible / incompatible driver or insufficient power output. In this article, we have listed a few things that can help you fix this error code.

The unexpected error does not allow you to copy the file. If you are still getting this error, you can use the error code to request help with this problem.

Error 0x800701B1: a device was specified which does not exist

Update or reinstall the hard drive drivers

Try updating or reinstalling the hard disk drive drivers to rule out outdated, incompatible or corrupted drivers as the cause of error 0x800701B1.

  • Open the Device Manager.
  • Expand the list of hard drives.
  • Right-click the problem hard drive.
  • Select Update Driver.
  • Wait until the update process finishes and then reboot your computer.
  • If the error occurs again, repeat the same process, but this time select Remove Device to remove the current hard drive driver.
  • Reboot your computer to install the universal driver.
  • Check to see if the problem persists.

Keep file transfer sizes small

Try limiting the file size to 10 GB when transferring files to or from your external hard drive. Trying to transfer files in larger chunks will put extra stress on your hardware, especially if you are using a low spec computer and an old hard drive.

Reinstall the driver

Driver inconsistency / incompatibility is another possible factor that can cause error code 0x800701B1. In this case, you need to install a new version that is compatible with the hard disk drive. Detailed instructions on how to do this can be found below:

  • Press the Windows logo key + R to open the Run dialog box.
  • Type devmgmt.msc in the Run dialog box and click OK.
  • In the Device Manager window, locate the hard disk drivers and expand the drop-down menu.
  • Now right-click on the driver causing this error and select Uninstall Device.
  • Wait for the process to complete and restart your computer.
  • This will remove the current driver and switch your Windows to a generic driver.

Update your PSU.

If none of the above methods have helped you, it’s time to take a look at your diet. If you’re having this problem on your desktop device, your power supply may not be working well enough to meet the needs of all your PC components.

Note that an SSD consumes about 3 watts, while regular 3.5 hard drives require about 10 watts. Depending on the other components (especially if you have a demanding video card), your power supply may not cover them.

If you currently have an additional device plugged in, remove any non-essential devices and see if the problem occurs.