Alternate command key. What it does. Help. Opens the Help system (if any) for the active window. Undo. Cancels the previous action. Redo. Cancels the previous Undo action.

On another Windows PC or other device, connect to Wi-Fi as you normally would, and enter your Wi-Fi password when prompted. For more info about connecting to Wi-Fi, see Connect to a Wi-Fi network in Windows.

Turn your PC off completely. To shut down, select Start and then select Power > Shut down.. Sleep. Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.

On the Email tab, choose your account (profile), and then choose Repair.

Windows 11 is designed to bring you closer to what you love and is releasing at a time when the PC is playing an even more central role in the way we connect, create and play.

Note: The best and safest way to get driver updates in Windows is always through Windows Update.If you are having problems with Windows Update, you might see if any of the links at Update Windows can help you out first.

On the Start menu, scroll down the all apps list to Microsoft Solitaire Collection, right-click (or press and hold) the tile and select Pin to Start .It'll be available on the Start menu.

If this screen appears, Microsoft 365 is installed as a one-year subscription or one-time purchase. A digital product key is transmitted to your PC, so you won't need or receive a printed product key.

In the upper left corner of the window, select the app launcher > All apps > SharePoint Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.

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。