Sparks Are Shooting Out

C: I can’t believe it, but X’s laptop again made the same sparking type sounds, with flashes of light and then locked up. Had to shut if off manually. HELP!
Me: Did you smell it? Does it smell like something is fried? How soon can you bring it to me? Don’t turn it on again.
C: I did turn it on again and it is running fine.
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