Disk Cleanup removes temporary files, system caches, Windows Update residuals, and other unneeded files to free disk space. On newer Windows, Storage Sense automates similar tasks. For deeper cleanup, use third-party tools cautiously and always back up before deleting system files.

Keyboards are input devices (they send data to the computer). Printers, monitors, and speakers are typical output devices that present data (visual or audio).

A VPN encrypts traffic and hides a user’s IP from remote sites (hides user identity online), improving privacy and bypassing some network restrictions.

Formatting erases all contents and creates a file system structure (e.g., NTFS, FAT32, exFAT) on a disk. Quick format writes a new file table without wiping all sectors; full format may check and zero sectors. Always back up important data before formatting and choose the filesystem appropriate for the OS and usage.

GUI uses icons, windows, and menus instead of text-only commands.

HTTPS encrypts web traffic using SSL/TLS for security.

A modem modulates and demodulates signals for internet access over phone lines.

Pressing PrtScn captures the full screen to the clipboard.

When the Windows operating system experiences a fatal system fault or crash, the BSOD error screen is shown. Critical software problems, incompatible drivers, or defective hardware are typically the causes. To help in troubleshooting, it displays error codes.

ipconfig is a command-line tool that displays your computer’s network configuration, including its IP address, subnet mask, and default gateway. It’s commonly used while troubleshooting network issues.

Ctrl + Shift + Esc - opens Task Manager directly, bypassing the need to use Ctrl + Alt + Del and then selecting Task Manager. It's faster and especially useful when diagnosing performance issues.

TDR stands for Timeout Detection and Recovery. This BSOD error typically happens when the GPU becomes unresponsive or the graphics driver crashes. It's common in gaming or video-heavy tasks with outdated or faulty GPU drivers.

sfc /scannow is a built-in Windows command that runs the System File Checker tool. It scans for and repairs corrupted or missing system files that might be causing issues like crashes or errors.