Tiny beetle

For two days now a tiny beetle has been circumnavigating my laptop screen. Up one side, across the top, then down the other side. Occasionally it turns and goes back the other way, or ventures a short distance over the keyboard. Once, it fell off onto its back but, when I helped it to right itself, it went straight back to its track around the screen. It's there when I shut down to go to bed, and when I log back on in the morning, there it is. Round and round and round it goes. What I want to know is this. What, exectly, is it trying to tell me?