OS Maintenance, Troubleshooting & Display

Overview

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This course covers operating system maintenance practices, systematic troubleshooting methodologies, and display technologies — three key areas tested on the CompTIA A+ Core 2 exam. Learners benefit from mastering how to keep systems running optimally through updates and performance tuning, how to diagnose and resolve common OS issues using structured troubleshooting steps, and how to support a variety of display types and configurations. Online labs provide practical experience with real maintenance and troubleshooting workflows.

Syllabus

OS Maintenance by Platform

This chapter covers how to update, manage, troubleshoot, and back up applications and operating systems across Windows, macOS, and Linux to keep systems secure and running smoothly.

Applications and Data Backup

This chapter covers how to update, manage, troubleshoot, and back up applications and operating systems across Windows, macOS, and Linux to keep systems secure and running smoothly.

Troubleshooting Systems

This chapter covers diagnosing and repairing Windows boot and application issues using tools like WinRE and Advanced Startup Options, while also addressing system crashes such as kernel panics across operating systems.

Display Technologies

This chapter explains how graphics cards create display output and shows how to install, configure, and take advantage of multiple‑monitor setups across operating systems.