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. Run the System File Checker tool (SFC.exe)

What it fixes. The troubleshooter helps fix problems that: Corrupt registry keys on 64-bit operating systems. Corrupt registry keys that control the update data. Prevent new programs from being installed. Prevent existing programs from being completely uninstalled or updated.

Restore deleted files and folders or restore a file or folder to a previous state. Navigate to the folder that used to contain the file or folder, right-click it, and then select Restore previous versions.

1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections. 5. Check sound settings. 6. Fix your audio drivers. 7. Set your audio device as the default device. 8. Turn off audio enhancements. 9. Restart Audio Services

From this page, you can view items that are currently in a user's Recycle Bin and items that a user has deleted from his or her Recycle Bin, sending the items to the second stage Recycle Bin also known as the Site Collection Recycle Bin.

You can quickly check the health of your Surface drivers and firmware using the Surface app. Open the Surface app. In the Surface app, expand Help & support to check the update status. If there are updates available, select the Check for updates button to open Windows Update and install the available updates.

Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.

If you delete files or folders that you're syncing, you can restore them from the Windows recycle bin on your PC. To put your Windows recycle bin on your desktop, see Show or hide the Recycle Bin. The information in this article also applies to OneDrive (for work or school) files.

If you're a SharePoint administrator, you can restore a site collection using PowerShell. For info, see Restore-SPDeletedSite. There are two Recycle Bins, the site Recycle Bin (first-stage) and site collection Recycle Bin (second-stage). The default retention period for any item is 30 days.

If you accidentally delete a file or folder in OneDrive, you may be able to recover it later from the OneDrive recycle bin, and if you're a Microsoft 365 subscriber, you can even restore your entire OneDrive if something goes wrong.