Learn how to use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Learn how to use the Program Install and Uninstall troubleshooter to repair issues that block programs from being installed or removed. The troubleshooter fixes corrupted registry keys and runs on Windows 10, 8.1, 8 and 7.

Learn how to locate your BitLocker recovery key, a 48-digit number needed to unlock an encrypted drive in Windows. See where to find it attached to your Microsoft account, work or school account, printout, or USB flash drive.

Learn how to turn off memory integrity and Virtual Machine Platform features to improve gaming performance in Windows 11. These features may affect the security and compatibility of your device.

Learn how to improve gaming on your PC by using a new presentation model for DirectX 10 and DirectX 11 games that appear in a window or in a borderless window. Find out how to turn on or off optimizations for windowed games, Auto HDR, and variable refresh rate in Windows 11 settings.

Learn how to control what apps can do when they run in the background and not actively in use. See the options for Always, Power optimized, and Never, and how they affect battery power and app functionality.

Learn how to troubleshoot Bluetooth issues on your PC, such as pairing, connecting, or using Bluetooth devices. Find solutions for common Bluetooth problems, such as missing icon, driver updates, or accessory issues.

Smart charging is a feature that limits your Surface battery to 80% to protect it against deterioration or expansion. Learn how to pause smart charging manually in the Surface app when you need a full battery charge.

Smart charging helps keep your battery healthier by not charging it to 100% all the time. Learn how it works, when to turn it on or off, and how to check your battery level.

Learn how to restore deleted items from the second-stage recycle bin, which is different from the first-stage recycle bin and the Windows recycle bin. Find out how long items are kept in the recycle bin, how to restore entire site collections, and how to use Microsoft 365 Backup.