If you have no plans or desire to run your own or anyone else's business then a business degree isn't what you will need.
To get maximum return on your skills when you rent your labor (aka "get a job") you need to be the most highly skilled at what it is you do. If you're not planning on any business management and only computer repairs then you need to be a highly skilled computer repairman.
The most highly skilled repairers of things (including computers) have more education/experience actually doing repairs than reading about them. That means you need to gain some serious experience on all types of repair problems more than you need a few classes in how to interpret a financial statement.
Most employers of repairmen (bench technicians) care much less about your formal education (degrees) and a lot about your experience and certifications. A+ ( http://www.comptia.org/certifications/listed/a.aspx
) is the entry-level bench tech certification. You can learn that material on your own (there are a lot of good books and videos), at a community college, or at a private business that prepares for the exam.
Don't expect this to be an easy job to get (every 14 year old nerd thinks he's a computer repair technician - and many are) and don't expect it to be among the highest paying careers. You can make a decent living though if you're good at it. Also be aware that computers are becoming more-and-more disposable appliances. Many people are opting for replacement over repair these days just like with televisions and microwaves.
You can always go back to school for a degree in business if you one day decide you'd like to have your own shop or would like to manage someone else's. Spending $36K+ on a bachelor's degree in business while not earning about $83K ($10 an hour for 4 years) means you need to ask whether getting a bachelor's degree is worth $120K to a computer repairman or if that money could be better spent.
On the other hand, if you were asking whether getting a degree in computer science or computer engineering is worth it - that's a whole different question because that's a whole different career path.
Prepare though - a bunch of people are going to tell you that your life will be ruined if you don't go to college and get a degree. Google "graduated from college and can't find a job" to see how wrong they are.