What is the actual meaning of computer troubleshooting?

Troubleshooting is the process of diagnosing the source of a problem. It is used to fix problems with hardware, software, and many other products. The basic theory of troubleshooting is that you start with the most general (and often most obvious) possible problems, and then narrow it down to more specific issues.

Many product manuals have a "Troubleshooting" section in the back of the manual. This section contains a list of potential problems, which are often phrased in the form of a question. For example, if your your computer's monitor is not producing an image, you may be asked to answer the following troubleshooting questions:

1. Is the monitor plugged in to a power source?
2. Is the monitor turned on?
3. Is the monitor cable plugged into the computer?
4. Is the computer turned on?
5. Is the computer awake from sleep mode?

To Determine the Source of the problem in the system and the reasons causing it