A few years back I had a weekend job at a computer store.
One day a customer walks in with a silver computer case which
looked pretty crappy. He tells me his son had some case modding
friends and he had been confident enough to take a crack it
himself but afterwards his PC didn't work anymore. So I take it
to the back and test it. Surely enough it didn't to anything, so
I screw open the case and surely enough the entire inside of the
case had a nice silver coating which had seeped in through the
ventilation holes in the side and back, and surely enough the
kid had neglected to remove the mainboard beforehand.