My Passport 1 TB portable - Autorun keeps popping up, You need to format disk keeps popping up

Thanks Rseiler

You might be onto something -  I left Windows Explorer up and watched my D: disappear then re-appear, so it does seem to be disconnecting. Right now none of the Smartware apps aren’t able to do anything because the drive keeps disconnecting.

Sent a message to support, but I suspect I will be returning this drive. Something is hideously wrong, and hours spent trying to trouble-shoot is not time well spent.

Thanks for your help