Subwoofer + CPU tower = Recipe for disaster?

When I was younger there was this private LAN party in the basement of my friend. Someone placed his tower near the washing machine (It was more like that: there were both washing machine and drier, with some place between them - put a board on the two machines and you get a primitive table); everything (except our course our computer hardware) was unplugged.

Then there was some 48h-gaming and we all decided to get some sleep upstairs. Some hours later: Return to the basement, our equipment was unplugged (not that tragic), the drier and the washing machine was plugged in instead, but they were off - so we decides to replug our computers and continue gaming. Haha, the guy with the tower near the washing machine didn't even get to the bootmanager.

What did happen? My friends mum decides that she had to do the laundry, obviously without omitting the spin cyle.

Hardware damage: none (the low-level format did the job)
Data loss: nearly everything (we did recover some fragments, but not much)

Since then I'm always cautious when it comes to data integrity.

cya
liquid

Jam it back in, in the dark.

It's not about soundwaves produced by the system, but the electromagnetic field. Spin cycle creates some very 'nice' EM-fields, maybe because of the motor size.

There's nowhere I can't reach.

That's not really true. DVDs have conductive components so a dynamic magnetic-field can induce a current in these conductors - if the current is strong enough the conductor and its surroundings are damaged because of the resistance of the conductor (leading to heat dissipation).
BUT you would need some very hefty fields for that to happen.

This thing is sticky, and I don't like it. I don't appreciate it.