What PC parts can produce bright flash, and smoke, with the PC still appearing to work fine afterwards?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Over a Mysterious Island

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Chapters
00:00 Question
01:26 Accepted answer (Score 40)
02:04 Answer 2 (Score 25)
02:45 Answer 3 (Score 16)
03:25 Answer 4 (Score 6)
05:32 Thank you

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Full question
https://superuser.com/questions/788316/w...

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Tags
#hardwarefailure

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