System Diagnostics: Algorithms for Solving Technical Problems [PDF]

System Diagnostics: Algorithms for Solving Technical Problems [PDF]

🛠️ System Diagnostics: Algorithms for Solving Technical Problems

This material is not a collection of outdated Windows XP instructions, but an engineering guide for diagnosing and repairing modern systems. We´ve removed all unnecessary details and left only a working methodology. You´ll learn how to localize a failure in minutes, why a backup without a restore verification is useless, and how to use logs instead of guesswork.

📘 What this guide is about:
A systematic approach to troubleshooting through the lens of science and technology. This guide teaches you to think algorithmically rather than act haphazardly. This is a transition from trial and error to conscious management of infrastructure of any scale.

⚡ What´s inside (11 structured slides):

✅ Troubleshooting philosophy: the "do no harm" principle, the method of elimination, action logging, and a scientific approach (hypothesis → test → conclusion).
✅ Primary diagnostics: asking the right questions to the user, log analysis (Event Viewer, syslog), basic checks, and stabilizing failure conditions.
✅ Hardware: SMART monitoring of SSD/NVMe, thermal monitoring, memory and power tests, diagnostics of peripherals and USB controllers.
✅ Software: clean installation vs. update, DDU for video drivers, startup analysis, file integrity recovery (SFC/DISM).
✅ Networks and communications: OSI model as a diagnostic map, tools (Ping, Wireshark, nslookup), Wi-Fi analysis, and perimeter configuration.
✅ Cyber ​​hygiene and security: 3-2-1 backup rule, EDR vs. antivirus, password managers, 2FA, social engineering protection, and automated updates.
✅ Performance optimization: identifying bottlenecks, SSD/HDD impact, virtualization (Docker/WSL2), cache and temporary file management.
✅ Cloud ecosystems: data synchronization, secure remote access (RDP/SSH/VPN), SaaS optimization, and a digital detox for productivity.
✅ Prevention and planning: maintenance schedules, monitoring and alerting, equipment lifecycle, infrastructure documentation.
✅ Infrastructure as Code (IaC): Ansible and Terraform as a way to prevent configuration drift and ensure environment reproducibility.
✅ System administrator checklist: checking backups, updates, logs, passwords, documentation, and temperature conditions.

💡 Added value (30–50):
• Zero Trust Security: the concept of micro-segmentation and device identification instead of perimeter security. • AI-Ops: Using artificial intelligence to analyze logs and predict failures.
• Green IT: Energy efficiency as part of administration (undervolting, sleep modes).
• Practical applicability: All terms (SMART, EDR, OSI, IaC) are explained for immediate use.

Who is this material for:
• System administrators and DevOps engineers.
• IT specialists looking to structure their diagnostic knowledge.
• Enthusiasts servicing home and office networks.
• Those looking to move from intuitive repair to a systems-based approach.

📥 Delivery format:
Instant delivery of the PDF file after payment. Opens on any device: computer, tablet, smartphone. Can be used as an interactive reference during work.

⚠️ Important:
This material is for educational purposes only. Before making critical changes to your infrastructure, we recommend creating backups and testing in an isolated environment. Use your knowledge responsibly.

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