General Diagnostic Techniques

Get to the Root Cause: Ask "Why" Five Times

Be Observant and Look For Evidence

Use the Process of Elimination

Do One Upgrade or Assembly Step At a Time

Make Use of Components That You Know Work

Write Things Down

Determine Repeatability

Dealing With Intermittent Problems

Correlation May Not Imply Causation

Scan For File System Problems

Use Diagnostic Tools

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