UR242 - Sound even though software is not running

Here’s a strange one. I’m sure it’s something silly.

If I plug in my guitar to my UR242 I instantly getting sound. It’s hissy, distorted, and has a slight reverb to it (which I cannot get rid of using the INPUT dials or PAD buttons). I’ve been combing through my services and running apps to see if something else is using the interface but I cannot find the culprit. Anyone has similar experiences?

I’m running a DELL laptop, Windows 10.