At the command prompt, type the following command, and then press ENTER: sfc /scannow. The sfc /scannow command will scan all protected system files, and replace corrupted files with a cached copy that is located in a compressed folder at %WinDir% \System32\dllcache. The %WinDir% placeholder represents the Windows operating system folder.

In your Microsoft account: Open a web browser on another device. Go to https://account.microsoft.com/devices/recoverykey to find your recovery key. Tip: You can sign into your Microsoft account on any device with internet access, such as a smartphone. It should look something like this:

System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps: Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.

Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.

Refunds for digital games include Microsoft Store digital game offers, Xbox apps (excluding movies and TV apps), digital gaming bundle offers, digital game durable content, and some digital game consumable content, whether made available through the Xbox console, on your PC, or on your mobile device.

Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.

How to enable TPM. If you need to enable TPM, these settings are managed via the UEFI BIOS (PC firmware) and vary based on your device. You can access these settings by choosing: Settings > Update & Security > Recovery > Restart now. From the next screen, choose Troubleshoot > Advanced options > UEFI Firmware Settings > Restart to make the changes.

Windows 10. Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made. To go back to a restore point:

About Windows 11 in S mode. Windows 11 in S mode is a version of Windows 11 that's streamlined for security and performance, while providing a familiar Windows experience. To increase security, it allows only apps from Microsoft Store, and requires Microsoft Edge for safe browsing. How do I get Windows 11 in S mode? How do I switch out of S mode?

This tool gathers information about your computer and displays a comprehensive view of your hardware, system components, and software environment, which you can use to diagnose computer issues. Notes: If you run MSINFO32 without Administrator privileges, it may show some drivers as stopped when they are not.