If you just want to fix computers, it shouldn't be that hard to land a job at a local shop, on-site business, or the closest GeekSqaud (Sorry FireDog). I got my first PC tech gig at PC Club computers in Santa Rosa, California. I was working at Best Buy as a seasonal temp down the street, but I went in often, sometimes just to window shop, other times for repair advice, and yet others for small parts. I ended up buying all the parts to my last computer there. The manager offered me a job there when he had an opening. I ended up getting fired for calling in sick late (long story), but it was a cool job while I had it. I didn't get burned out on the whole tech thing until after I tried making a small business of doing local on-site work. I still think that IQ tests should be taken before you can do things like vote, get a driver's license, etc, and owning a computer is one of those things.
If you don't want to go into business for yourself, and you don't want to work in retail (who does?), then start scouting sites like indeed.com, dice.com, and computerjobs.com for jobs with titles like DST (Desktop Support Technician). Like most IT jobs, the titles vary, but a Support Tech, Field Tech, Service Tech, etc, etc, all equate to a glorified Computer Repair Technician. In a medium to large business setting, they end up handling the trouble tickets that Helpdesk couldn't fix over the phone, or just the less important stuff that the Admins don't have time for.
These type of positions aren't as popular as they once were. More and more medium to large companies buy their computer with warranties and extra manufacturer support, so they don't have to hire techs like you. And even if you do get to grace their offices, you'll void a machine's given warranty if you so much as open the case unless you're manufacturer certified. Also, the companies that do hire full-time techs are sure to keep you very, very busy. You'll probably have more than 300 machines that you'd be responsible for. Being on-call, rotating weekend and evening shifts, lots of headache for slightly above average pay (company and location pending)... these are all parts of a life in IT. However, if you're in IT, and you truly love what you do, the headaches aren't deal breakers.
For starters, just look into getting basic certifications like the A+ and Network+. Both certs are very underrated IMO. Certs are good, Education is much better, but experience is the golden ticket to Wonka land. Even non-professional experience is good. It's not nearly as good as on-the-job professional exprience, but it still shows you can do something instead of memorized some questions about it, or read a large chapter on it.