Which action should you take to troubleshoot a problem if your computer system is complex?

Find what accurately is the trouble.

Gather more details, resolve variables.

Repeat the difficulty, generate a basis of a source problem.

Try a fix based on judgments.

Explanation:

First of all you should find the problem that what is the trouble and what is your issue. After that you should gather details of your issue and then try to resolve that issue but if it exits again then troubleshoot it.