Turn “it’s broken” into a testable symptom.
Capture the task, exact error, timing, scope and safety implications before guessing at a cause.
Practical IT troubleshooting field guide
The ticket is not the problem.
A practical guide for IT support staff who need to turn a vague report into a safe next action—without fixing somebody’s theory, losing evidence or creating the next incident.
Leanpub edition: PDF and EPUB · DRM-free · free updates · from US$9.99
Useful default: What do we know, how do we know it, and what is the smallest safe test that could prove us wrong?
Built for the first useful move
For support staff working through unclear problems.
New support staff, service-desk analysts and junior systems engineers do not need another commands list. They need a reliable way to clarify impact, find the useful boundary, test safely and hand over an honest record when the next step needs more authority.
Choose a test that changes the next decision.
Prefer a narrow, reversible comparison over a restart that restores service and destroys the useful evidence.
Hand over facts, limits and the decision needed.
Escalation is not failure. It is the right move when the next safe step needs access, authority or a second set of eyes.
The Method
Seven decisions that keep troubleshooting honest.
The method does not slow urgent work down. It helps distinguish the useful kind of fast from random activity with elevated privileges.
01Triage
02Scope
03Evidence
04Test
05Respond
06Verify
07Resolution
A practical learning path
Work through cases, not abstract rules.
The complete guide uses three contrasting scenarios to show how the same decision habits change pace and response:
- One user cannot complete a payroll task—narrow scope, cautious recovery.
- “It is DNS”—a local report becomes a wider service degradation.
- An intermittent warehouse fault—capture a pattern before changing infrastructure.
Start here free
Read the method before you buy it.
How to troubleshoot an IT issue without guessingA free, practical explanation of the seven decision points.
How to choose a safe troubleshooting testUse comparisons that distinguish explanations without deleting the evidence.
Read a complete worked DNS incident scenarioSee how a payroll ticket becomes a managed company-wide service degradation.
The Complete Field Guide
Recover service without pretending you proved the cause.
Includes worked scenarios, decision drills, an evidence and test-selection worksheet, a handover record and a one-page desk reference.