This laptop doesn’t seem happy.
Exactly once per second it’s alternating between these two separate on-screen artefacts. The half-eaten Control Panel window is a remnant of the real window, which was closed a moment before the photo was taken.
Moving the mouse or doing anything else that changes what’s actually on the screen (i.e. in the buffer, sans artefacts) causes them to flash a lot faster—it looks like once per frame.
The mouse pointer and other on-screen movement also “erases” the buffer, as shown in the first image, like dragging windows around over improperly refreshed areas of the screen did in the olden days.
It’s a Toshiba laptop running Vista.
