Once common issues are ruled out, troubleshooters must run through a checklist of components to identify where the failure is happening. For example, when a laptop won't boot up, an obvious first step is to check whether the power cable is working. Troubleshooters initially look for common, known causes. The initial goal is to diagnose the problem and try obvious solutions, such as performing a system reboot, powering down and up, and checking that the power cord is connected. Troubleshooting methodologies usually try to isolate a problem so that it can be examined. This can help identify component incompatibility issues and problems caused by third-party products. Once the issue and how to reproduce it are understood, the next step is to eliminate unnecessary components to determine if the issue persists. The first step in most troubleshooting methods is gathering information on the issue, such as an undesired behavior or a lack of expected functionality. Troubleshooting is a systematic approach to problem-solving that is often used to find and correct issues with complex machines, electronics, computers and software systems.
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