Could this be the work of some sort of rogue garden
gnome?
Sky..The same thing once happened to my rig.
You were attacked by a swarm of red-necked fuzzworts. The sneaky little buggers come in the night, or after you are passed out. (whichever comes first)
You need to remove all copper wiring from your home, and replace it with aluminum. The little Fu(k3r$ CAN'T STAND aluminum. Also, paint over your cars, and other vehicles that may have audio equipment with aluminum paint. I suggest Rustolem. It has the added benefit of reducing the rate of oxidation of the metal.
The Fuzzworts have very sharp interlocking teeth, similar in action to the ubiquitous Greenlee Cable Cutter. This explains the damage to your PC. Get rid of all the copper, and replace it with aluminum. Come to think of it, you will also need to replace the copper plumbing in your chateau with either CPVC, or galvanized iron pipe. Call me if you need help with this phase, as I am a legend in my own mind when it comes to running pipe.
I hope this helps. God bless America.
Cheers,