Kinda scared.. any ideas ?

So, earlier .. i just left the room.. and my friend was in my room .. at that time i was in the bathroom washing my hands. A few seconds later.. a big spark appears in my room.. and hurts her eye.. Later that day we were sitting on my bed , talking to people on my webcam.. a scratch , as i picked my laptop up .. it was there. Wasnt there earlier .. no dog or sharp things around either.. thanks for your answers. !! i appericate it . !