Troubleshooting

Troubleshooting is the systematic process of diagnosing, identifying, and resolving problems in computer systems, networks, and applications.

Troubleshooting Methodology

• Identify the Problem - Gather information and define symptoms
• Establish a Theory - Consider probable causes
• Test the Theory - Verify or eliminate potential causes
• Establish a Plan - Determine corrective action
• Implement the Solution - Apply the fix
• Verify Functionality - Confirm resolution
• Document Findings - Record the issue and solution

Common Areas

• Hardware - Component failures, connectivity issues
• Software - Application errors, conflicts, crashes
• Network - Connectivity, performance, DNS issues
• Security - Access problems, malware, authentication failures
• Performance - Slowdowns, resource exhaustion

Diagnostic Tools

• System logs and event viewers
• Performance monitors
• Network analyzers
• Diagnostic commands (ping, tracert, ipconfig)
• Remote access tools
• Hardware diagnostics

Best Practices

• Document everything
• Change one variable at a time
• Check the obvious first
• Use a systematic approach
• Escalate when appropriate
• Learn from resolved issues