If you experience a black or blank screen on your Windows device, try the following: To wake the screen, use one of the following keyboard shortcuts:

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。

Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.

As you browse the web, you'll see an icon in the address bar that indicates the security of the connection to the site you're visiting. This icon helps you determine if you can safely send and receive information from the site.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery .. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

To see where your browser is saving downloads, look in your browser's settings. For example, in the new Microsoft Edge , select Settings and more > Settings > Downloads .The file path for your downloaded files (for example, C:\Users\[your name]\Downloads) is listed under Location.. In Microsoft Edge Legacy , select Settings and more > Settings .

Notes: Many languages contain symbols that could not be condensed into the 256-characters Extended ACSII set. As such, there are ASCII and Unicode variations to encompass regional characters and symbols, see Unicode character code charts by script.

Excel makes it easy to crunch numbers. With Excel, you can streamline data entry with AutoFill. Then, get chart recommendations based on your data, and create them with one click.

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.

Invite people to view or edit your presentation. Save your file to the cloud and then invite people to view or edit it. That way, whenever you update your file, everyone you share with will have the latest version.