Learn how to reinstall Windows on your PC and how activation works after it's installed.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to install Windows 7 Service Pack 1 (SP1). Includes info about how to get the download, requirements, and more.

With Microsoft Edge, you can turn on sync to browse the web on all your devices, keep your favorites organized, and more.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results.

Rename your device to make it easier to identify if if you use multiple computers with your Microsoft account.

Turn on Find my device. When you set up a new device, you can decide whether to turn on or turn off the Find my device setting. If you turned it off during setup and now want to turn it on, make sure your Windows device is connected to the internet, has enough battery power so it can send its location, and that you're signed in to the device using your Microsoft account.