IT Support & Troubleshooting

Practical troubleshooting notes for common support issues, device problems, printer problems, and real-world help desk scenarios.

How to Troubleshoot “Connected but No Internet” Step by Step

A practical step-by-step guide for troubleshooting connected-but-no-internet issues in beginner IT support.

Network+NetworkingTroubleshootingDHCPDNSWi-Fi

IT Support & Troubleshooting

A practical beginner overview of malware types, infection signs, basic response steps, and when to escalate.

CompTIA A+SecurityMalwarePhishing

IT Support & Troubleshooting

A practical beginner guide to paper jams, toner, print queues, drivers, network printers, and office support habits.

CompTIA A+PrinterHelp DeskTroubleshooting

IT Support & Troubleshooting

A beginner-friendly guide to common Windows commands used in help desk troubleshooting.

CompTIA A+WindowsCommand LineHelp Desk

IT Support & Troubleshooting

What Safe Mode and Startup Repair do, when to use them, and what beginner support learners should avoid.

CompTIA A+WindowsSafe ModeStartup Repair

IT Support & Troubleshooting

A practical checklist for when devices connect to a new access point but cannot reach the internet.

wifiaccess-pointsnetworking

IT Support & Troubleshooting

A beginner-friendly explanation of why a device gets a 169.254 address and what to check first.

networkingdhcpbeginners

See every current Jensen IT Notes article across support, networking, tools, projects, and career learning.