This article lists several solutions that may help improve your PC’s performance. We recommend trying all the listed solutions as multiple factors can contribute to slow performance.

Oct 14, 2025 · Fix-it tools aren’t used in Windows 10. Instead, use a troubleshooter to help solve problems with your PC.

Learn how to use Manage and Optimize Drives to keep your disk and data drives defragmented and at top performance in Windows.

Learn how to recognize Internet connection problems and help improve your computer's online performance.

If your PC is experiencing problems, especially issues related to Windows Update, you can use the Fix problems using Windows Update recovery option to reinstall the current version of Windows.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend …

Jan 12, 2007 · Note: You may be able to get a known good copy of the system file from another computer that is running the same version of Windows as your computer. You may wish to perform a …

It will automatically run diagnostics and attempt to fix most of the problems. If you are using an older version of Windows or a mobile device, please skip to General troubleshooting steps.

If your Surface isn’t working as expected, the Surface app and Surface Diagnostic Toolkit can help you identify and fix common issues. Here’s how to get started:

For help with your Microsoft account and subscriptions, visit Account & Billing Help. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.