Was I hacked (CMD)?

When I went up my laptop, typed in the password, and then I was on the desktop, the CMD window opened twice without any action from me, but where nothing appeared. After less than a second, they were closed (or hidden) again.

Does anyone have any idea what this could be?

There has probably been something updated, this is usually not a hack.

This does not have to be a hacker, it can just be a bug or a system update error.

Suspect batch files or something