Troubleshooting is all about problem solving. It is the process related to finding a problem and then isolating that problem and looking into ways to possibly solve that same problem.
In the IT space, this is applied to pretty much everything, both on the software and hardware side of assets.
A simple example of troubleshooting being used is in computers, both personal and enterprise ones.
Want some simple steps to help you troubleshoot?
Once a computer fails, simple things users can try and do to make their life easier include noting down the steps they are taking while troubleshooting so they can keep track of things in case something else fails further down the line.
In addition, it is important to write down what sort of error messages the system is showing.
One important thing to try before hand if no apparent error is presented by the machine, is the cables. Check if they are all in the right place and connected. Also check the power supply to ensure it is turned on.