Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

To create the installation media, here's what you'll need: A PC with a reliable internet connection. The download time will vary, depending on your internet connection.

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.

This article applies if you’ve recently made changes to your device hardware and are trying to upgrade to Windows 11. Hardware changes might affect your upgrade eligibility, though you’ll need to take a few steps to see your updated eligibility in Settings.

Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

Note: Recovery drives created and used on machines with the April 9, 2024 security update and the revocation policy applied may be impacted.For more, see KB5025885: How to manage the Windows Boot Manager revocations for Secure Boot changes associated with CVE-2023-24932.

Test your camera with the Camera app. Select Start , then choose Camera from your apps. If you're asked to allow access to the Camera, select Yes.If the camera works in the Camera app, the problem might be with the app you're trying to use.

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。

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.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled.