Computers are great, but it can be frustrating when something goes wrong with them. However, we're all fed up with spending hundreds of dollars and weeks of downtime with a big computer chain store and their repair support with inexperienced technicians. So we're stuck once again, not knowing what to do or where to turn with a computer that still isn't working.

My advice is to find a computer repair service you can trust. If you give your computer to a technician who isn't sure if they are comfortable with laptop repairs or if they cannot give an estimate of the costs, a reasonable hourly rate and more importantly, assurance that your system will be repaired promptly, find a technician who will. You will need the services of a computer repair company if you are experiencing any of the following problems:

• If your PC gives an error upon startup and does not allow access to the operating system whatsoever. You should contact a computer repair company if you are unable to fix these problems or if you don't know how to reformat your hard drive.

• You'll need help from a professional, if your computer will not turn on at all. This is often a power supply problem and unless you know how to install a new one, get help.

• If you are experiencing problems with the computer hardware or your wireless network and cannot fix the issue on your own, you should seek out a technician to help you. Even the simplest of hardware can be tricky if you have minimal experience with it.

• When your computer is still under warranty, only certified technicians are permitted to take it apart and fix the hardware issue. You run the risk of voiding the warranty by attempting to make repairs on your own.

• If your computer consistently shows software errors and you unable to stop them, then you probably need a computer specialist. Try un-installing and reinstalling the program to begin with but if you're still having problems, there is a good chance you have a major software problem.

There are a great deal of potential issues which can occur with your computer. The list of reasons would last for days. You're best bet is to not attempt anything which can potentially void the warranty and instead seek the assistance of a professional if the issue is something that you cannot take care of on your own.