Self-employment?

You'd want to be pretty wary going into building computers, and it would have to be merely a side job for a long time, because you aren't going to bring in enough to support yourself if you're flying under the radar and don't have a business location where you can put a sign and get walk-in business. Plus to build word of mouth, especially on something like computer purchase, takes a large time investment as well. You also have to make sure you can manage your own finances, understand legal business issues as well as business finance issues, and want to continue with the business for an extended period of time, because if you're doing computers and relying on word of mouth, some people won't show up for a year or three, if they do.

We had a locally-originated computer-building store that was pretty much home-grown and then expanded from there, but they recently tanked because they were after profits more than they were after giving service by the end. The work that used to be good ended up being pretty shoddy and breaking down, and they wouldn't honor warranty stuff.

Jam it back in, in the dark.