You don't need to be an electrician to repair computers. I would also think the guy who can wire your house to the code is not necessarily able to replace a bur

You don't need to be an electrician to repair computers. I would also think the guy who can wire your house to the code is not necessarily able to replace a burnt motherboard and clean out hordes of viruses (because that's what "repairing computers" often means), or to assemble a working machine out of bunch of components and install OS and a basic set of programs. This kind of computer work is mostly software, with elementary hardware troubleshooting skills, so you'll need more an admin than an electrician.