Before you hire someone to fix your computer you should do your research to make sure the person fixing your computer knows what they are doing. If the computer technician is good, they can most likely fix your problem within a few minutes. But if the technician is bad, they can cause more damage than good. So first and foremost you should always ask the computer technician what their experience is. Also talk to people who have used them in the past.
With the advancement of computer technology, there are many programs (both free and paid) that can help fix the problem for you. A great way to learn computers is to check out this online video from http://www.ComputerHelp.com