External HDD issue

I recently connected an external HDD to my series X. The console formats and detects the drive just fine yet when i power the system on it won't connect to the network. I'm using a wired connection, have tried resetting the console and the router, have formatted the HDD on my PC and yet when i unplug the drive it all works just fine so why is it doing this?

The HDD in question is a WD black one 12tb that has xbox branding on it.It used to work and now all of as sudden when i plug it in the network is disabled. Yet when i unplug it the network works just fine.

:)