CompTIA A+
1 Mobile Devices
1-1 Explain the basic components and functionality of mobile devices
1-2 Identify common mobile device connectivity issues
1-3 Troubleshoot mobile device hardware and network issues
1-4 Perform basic mobile device synchronization
1-5 Configure and secure mobile devices
1-6 Explain mobile device application management
1-7 Identify common mobile device security threats
1-8 Implement mobile device security best practices
2 Networking
2-1 Explain basic networking concepts
2-2 Identify common networking hardware
2-3 Troubleshoot common networking issues
2-4 Configure and secure wired and wireless networks
2-5 Implement network addressing and name resolution
2-6 Explain network protocols and services
2-7 Identify common network security threats
2-8 Implement network security best practices
3 Hardware
3-1 Explain the basic components of a computer system
3-2 Identify common hardware components and their functions
3-3 Troubleshoot hardware issues
3-4 Install and configure hardware components
3-5 Perform basic hardware maintenance
3-6 Explain power supply and cooling systems
3-7 Identify common hardware security threats
3-8 Implement hardware security best practices
4 Virtualization and Cloud Computing
4-1 Explain virtualization and cloud computing concepts
4-2 Identify common virtualization and cloud computing technologies
4-3 Troubleshoot virtualization and cloud computing issues
4-4 Configure and secure virtualization and cloud computing environments
4-5 Implement virtualization and cloud computing best practices
5 Hardware and Network Troubleshooting
5-1 Explain the troubleshooting process
5-2 Identify common hardware and network troubleshooting tools
5-3 Troubleshoot hardware and network issues
5-4 Implement hardware and network troubleshooting best practices
6 Operating Systems
6-1 Explain the basic components of an operating system
6-2 Identify common operating system components and their functions
6-3 Troubleshoot operating system issues
6-4 Install and configure operating systems
6-5 Perform basic operating system maintenance
6-6 Explain operating system security concepts
6-7 Implement operating system security best practices
7 Security
7-1 Explain basic security concepts
7-2 Identify common security threats and vulnerabilities
7-3 Troubleshoot security issues
7-4 Configure and secure systems and networks
7-5 Implement security best practices
7-6 Explain data destruction and disposal methods
8 Software Troubleshooting
8-1 Explain the software troubleshooting process
8-2 Identify common software troubleshooting tools
8-3 Troubleshoot software issues
8-4 Implement software troubleshooting best practices
9 Operational Procedures
9-1 Explain the importance of operational procedures
9-2 Identify common operational procedures
9-3 Implement operational procedures
9-4 Explain the importance of documentation and training
9-5 Implement documentation and training best practices
9-6 Explain the importance of environmental controls
9-7 Implement environmental controls best practices
9-8 Explain the importance of safety procedures
9-9 Implement safety procedures best practices
Troubleshoot Operating System Issues

Troubleshoot Operating System Issues

Key Concepts

Blue Screen of Death (BSOD)

The Blue Screen of Death (BSOD) is a critical error screen displayed by Windows operating systems. It occurs when the system encounters a critical error from which it cannot recover. Common causes include hardware failures, driver issues, and system file corruption. Troubleshooting involves checking for recent hardware changes, updating drivers, and running system file checks.

Example: Think of the BSOD as a red alert in a spaceship. Just as a red alert indicates a critical situation that requires immediate attention, the BSOD indicates a critical error that needs to be resolved to restore system stability.

System Restore

System Restore is a feature in Windows that allows users to revert their system to a previous state. This can help resolve issues caused by recent software installations, driver updates, or configuration changes. System Restore points are created automatically or manually and can be used to restore the system to a stable state.

Example: System Restore is like a time machine for your computer. Just as a time machine can take you back to a previous point in time, System Restore can take your computer back to a previous state before the issue occurred.

Safe Mode

Safe Mode is a diagnostic startup mode in Windows that loads only the essential drivers and services. It is used to troubleshoot and resolve issues that prevent the system from booting normally. Safe Mode can help identify if a problem is caused by a third-party driver or application.

Example: Safe Mode is like a minimalistic version of your computer. Just as a minimalistic lifestyle focuses on the essentials, Safe Mode focuses on the essential components needed to boot the system and diagnose issues.

Event Viewer

Event Viewer is a tool in Windows that logs events and errors occurring on the system. It provides detailed information about system performance, security, and application issues. Event Viewer can be used to identify the root cause of problems by analyzing error logs.

Example: Event Viewer is like a diary for your computer. Just as a diary records daily events, Event Viewer records system events and errors, providing valuable insights into what went wrong.

Disk Check

Disk Check is a tool in Windows used to scan and repair disk errors. It checks the file system and disk surface for errors and attempts to fix them. Disk Check can help resolve issues related to file system corruption and bad sectors on the hard drive.

Example: Disk Check is like a mechanic inspecting a car's engine. Just as a mechanic checks for issues in the engine, Disk Check checks for issues in the file system and disk surface, ensuring the system runs smoothly.

Driver Issues

Driver issues occur when the software that allows the operating system to communicate with hardware devices is outdated, corrupted, or incompatible. Common symptoms include device malfunctions, system crashes, and error messages. Troubleshooting involves updating, reinstalling, or rolling back drivers.

Example: Think of drivers as translators between your computer and its hardware. Just as an outdated dictionary can lead to misunderstandings, outdated drivers can lead to communication errors between the OS and hardware, causing issues.