PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC.

Find operating system info in Windows 11. To find out which version of Windows your device is running, press the Windows logo key + R, type winver in the Open box, and then select OK. Here’s how to learn more: Select Start > Settings > System > About . Open About settings.

For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.

Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device.

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.

如何连接 Xbox 360 无线网络适配器. 将 Xbox 360 无线网络适配器连接到 Xbox 360 主机的背面，方法是将适配器上的塑料拉环固定在主机背面的插槽中。. 将 USB 缆线插入主机背部的 USB 端口。. 注意 如果您使用的是无线适配器和 Kinect 传感器，请使用 Kinect 传感器随附的 ...

請檢查這裡是否發生了已知問題，而這些問題是我們目前正在追蹤，但最後卻發現您可以自行處理的問題。. 智慧分發的技術是，無論主機世代為何，將會自動傳遞您購買遊戲的最佳版本至您的主機，不需要您執行額外的步驟。. 例如，如果您為您的 Xbox One 購買 ...

Windows Hello is a more personal and secure way to sign in to your Windows device. Instead of using a password, with Windows Hello you can sign in using facial recognition, fingerprint, or a PIN.

了解如何修复错误代码 0x8007045B，以便可以在 Windows 电脑上安装 Xbox Game Pass 游戏。.

下面是如何分别构造 AND 、 OR 和 NOT 函数的概述。. 当将它们分别与 IF 语句组合使用时，应按如下方式表达：. AND – =IF (AND (Something is True, Something else is True), Value if True, Value if False) OR – =IF (OR (Something is True, Something else is True), Value if True, Value if False)