Heck, all I do to dispose of old computers is bury them at an undisclosed location on my property. Okay, I may take out a few frustrations on them with axes, sledgehammers, or firearms first, but burying is the main thing. A four foot deep hole at a random spot somewhere on 7.5 acres of woodland and ain't nobody ever finding that sucker. At least, not while I'm alive. And if someone finds it after I'm dead, I don't care.