Thanks for the reply and links. I do have backups of my system going to my homeserver so can try the registry edit. Although in that topic I noticed a lot of mention of having the drive connected to USB 3. Which I think I do. So I will see if changing that solves it.
EDIT: Actually I didn't have it connected to USB 3.
I should mention this PC in question here, isn't the same as the one listed in my system specs. It's this one.
And the external hard drive isn't exactly a regular external hard drive. It's an Archos Media Player Av700 is the model. Formatted in Fat 32.
Will try out the reg edit next.
EDIT: Tried that regedit. The steps didn't specify whether to choose 64-bit or 32-bit so I tried both one after the other. No luck.
It's not the biggest deal in the world just annoying. I wish I knew how to run a script or something to close it on startup.