EDITED: DBAN is a powerful disk wiper. Be sure you have backups of any drive you have attached to the PC before use. Or just unplug drives you don't want wiped by accident.
I think I'd go get DBAN and wipe it clean. You made no point about data recovery.
It it's wiped and still doesn't show up in disk management then it's broke in some odd way.
Before the wipe I'd look at it under Linux. We can boot Linux and not learn linux to look at such things.
Hi, I have a 2TB external hard drive that I used as extended storage on my PS4. I got a bigger one, so I wanted to use it on my PC, but it won't show up under devices and drives, nor under disk management. It does show up under devices and printers in settings, but that's it. Please help! Thanks in advance for any help.