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Use the System File Checker tool to repair missing or corrupted system ...
If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.
Find your Windows product key - Microsoft Support
It looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.
Applies To: Microsoft account dashboard
Screen mirroring and projecting to your PC or wireless display
You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.
Download drivers and firmware for Surface - Microsoft Support
Download drivers and firmware for Surface. Windows 11 Windows 10 Surface. Updates keep your Surface performing its best. Along with software updates for Windows 10 or Windows 11, it's important to make hardware updates, also known as updates for drivers and firmware.
How to Install the Windows Support Tools from a Command Prompt
This article describes how to use the Msiexec.exe tool to install the Windows Support Tools from a command prompt. More Information. Support personnel and network administrators can use the Support Tools to manage their networks and to troubleshoot problems.
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
PowerShell is replacing Command Prompt - Microsoft Support
Windows 10. To create the best command-line experience, PowerShell is now the command shell for File Explorer. It replaces Command Prompt (cmd.exe) in the Windows Logo Key + X menu, in File Explorer' s File menu, and in the context menu that appears when you shift-right-click the whitespace in File Explorer.
Getting ready for the Windows 11 upgrade - Microsoft Support
Once the Windows 11 upgrade has been tested and validated for your specific PC, Windows Update will indicate that it's ready for installation. To check if Windows 11 is ready for your device, go to Start > Settings > Update & Security > Windows Update and select Check for updates.
Find settings in Windows - Microsoft Support
Find your Windows settings in a snap! Select the Start button, then select Settings . From there, browse the categories or use search to find what you're looking for. Most apps have their own settings. In the app, select Settings to make app-specific changes. Learn how to make Windows easier to see and easier to hear .
Command Prompt and Windows Powershell for Windows 11
In Windows 11 22H2, the default app used to host console windows has been changed to Windows Terminal. After the October 2022 update, Command Prompt, Windows PowerShell, and other console apps will appear inside an instance of Windows Terminal.