Windows
Overview
Windows is one of the most common operating systems for homes, schools, and businesses — IT helpdesk and sysadmin roles often require Windows troubleshooting knowledge.
Key concepts
- Desktop, Taskbar, Start Menu, File Explorer, Settings, Control Panel
- Standard User vs Administrator, UAC
- Command Prompt core commands
- PowerShell cmdlets and scripting
- Task Manager, Device Manager, Disk Management, Services, Windows Update
How it works
Overview
Windows is one of the most common operating systems for homes, schools, and businesses. Because of this, IT helpdesk and system-administration jobs often require Windows troubleshooting knowledge.
Desktop
Desktop
The main workspace on a Windows computer — can hold files, folders, shortcuts, and applications.
Taskbar
Usually at the bottom of the screen. Contains the Start menu, pinned applications, open programs, Wi-Fi, volume, battery, clock, and notifications.
Start Menu
Lets users search for applications, files, settings, and system tools, and restart, sleep, or shut down the computer.
File Explorer
The Windows application used to manage files, folders, drives, USB devices, and network locations — similar to Finder on macOS.
Settings
The main area for changing Windows options: network settings, Bluetooth, display, privacy, accounts, Windows Update, and installed applications.
Control Panel
An older Windows settings area. Many IT tools are still available here, including power options, devices, user accounts, and network settings.
Windows Accounts
Standard User
Can use programs and access their own files, but usually cannot install system-wide software or change important system settings.
Administrator
Has higher-level access — can install software, add/remove user accounts, change security settings, manage devices, and access protected system files.
User Account Control (UAC)
A Windows security feature that asks for confirmation before a program makes an administrative change — for example, before an installer changes your computer. This helps stop malware or unknown software from silently making changes to the OS.
Windows Command Line
Command Prompt (CMD)
The traditional Windows command-line interface — manage a computer by typing commands instead of clicking through menus.
| Command | What it does |
|---|---|
dir | Shows files and folders in the current directory. |
cd | Changes the current folder, e.g. cd Downloads. |
mkdir | Creates a new folder, e.g. mkdir CybersecurityNotes. |
copy | Copies a file from one location to another. |
ipconfig | Shows network info — IP address, subnet mask, gateway, DNS server. Add /all for more detail. |
ping | Tests reachability of another device/website, e.g. ping google.com. |
tasklist | Displays currently running programs and processes. |
taskkill | Ends a running process — useful when an app freezes. |
chkdsk | Checks a storage drive for errors and can attempt repairs. |
PowerShell
A more advanced Windows command-line tool, commonly used by system administrators because it can automate tasks, manage computers, and run scripts.
| Command | What it does |
|---|---|
Get-Process | Shows currently running processes — similar to Task Manager. |
Get-Service | Lists Windows services (background programs supporting Windows and apps). |
Get-ChildItem | Lists files and folders in the current location — similar to dir. |
PowerShell Scripts
A file containing multiple commands run together — useful for automating repetitive IT tasks like creating accounts, checking system info, or configuring multiple computers.
Windows Administration Tools
Task Manager
Displays running applications, background processes, CPU/RAM/storage/network usage, and startup applications. Use it to end frozen programs or find what's consuming resources.
Device Manager
Shows connected hardware — used to check drivers and troubleshoot devices like graphics cards, Wi-Fi adapters, Bluetooth, keyboards, and printers. A yellow warning icon usually means a driver problem.
Disk Management
Manages storage drives and partitions — initialize new drives, create partitions, format volumes, change drive letters, resize partitions.
Services
A management tool for background Windows processes — start, stop, restart, or configure services like Windows Update, Bluetooth Support, and Print Spooler.
Windows Update
Downloads security patches, bug fixes, feature updates, and some drivers. Keeping a computer updated matters because unpatched systems can be vulnerable to known issues.