Weird! Maybe try to attempt connecting an Android TV remote via app? Or try unplugging/plugging in an HDMI cable connected to something (basically hoping that an HDMI CEC signal takes higher precedence than this screen)
That looks like it's trying to pair the remote with the TV. Is it possible that your roommate got to that screen because the remote wasn't working? If so, try replacing the batteries in the remote, then pressing those buttons.
Have you tried turning it off and on again
Have you tried replacing remote batteries, then pressing and holding those two buttons at the same time ?
Its not a brick, just a remote pairing screen.. Point the remote to tv and press highlighted buttons for 5-10s, it will dissapear. Had this pop up more than once and always paired again with no problems