I had my friends old computer for a while a few years ago, it was never turned off, he used it for the garage accounts, I had to try and back up the data to transfer it to a new machine
it was the older desktop types not a tower, when I opened the machine you could not see any components on the mother board at all, there was a layer of about 2 inches of muck/dust/fluff on it, I was amazed it never packed up :lol: