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.
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