Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years.

Thanks,

CNET Support

Resolved Question

USB Device not recognised

Jun 7, 2018 10:53AM PDT

I used KillDisk to zero out my USB external hard drive, Now I get the message that I have an Unrecognized Device. When using the Device Manager it says all of my USB Ports are okay.

Any suggestions? Thanks a bunch, Uncle Dewey

Discussion is locked

uncledewey has chosen the best answer to their question. View answer

Best Answer

- Collapse -
I usually try another PC.
Jun 7, 2018 1:52PM PDT

And other tools.

For example, boot up GPARTED (it's a standalone tool on USB and CD free and found on google plus how to use is in videos and again , google.)

What does GPARTED report?

Also, some drives do that when the power is not good enough (laptop on battery power) or the WRONG USB CABLE IS USED.

Tell more.

- Collapse -
Thanks for the update.
Jun 7, 2018 4:12PM PDT
- Collapse -
Answer
Disk
Jun 7, 2018 11:12AM PDT

What does disk management show about this device?

- Collapse -
USB Device not recognised
Jun 7, 2018 1:44PM PDT

The device manager does not show anything that I can find about the device. I don't see any category for unknown devices. When plugged in, the system keeps reporting that there is an unknown device which also resets the Device Manager display.

Uncle Dewey

- Collapse -
Usb
Jun 7, 2018 2:08PM PDT

I did not say device manager.

I said disk management.

- Collapse -
USB Device not recognized
Jun 7, 2018 4:04PM PDT

I could not find anything called Disk Management, and besides the computer did not know what kind of device was connected. But R Proffitt mentioned power, so I connected the drive to a 3.0 USB Port, and all is well.

Thanks to all for helping--I really need guys like you. Uncle Dewey