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

If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

Your desktop icons may be hidden. To view them, right-click the desktop, select View, and then select Show desktop icons.To add icons to your desktop such as This PC, Recycle Bin and more:

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.

Choose either portrait (vertical) or landscape (horizontal) orientation for all or part of your document.

The dialog that appears varies depending on whether you had the Add Apps or Get Add-ins option available to you. If you selected Add Apps, the Apps dialog appears. If you selected Get Add-ins, the Add-Ins for Outlook dialog appears. Search for the add-in you want from the available list.

Use a ready signature template from a gallery to create your email signature in Outlook.

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

Get to know common Windows keyboard shortcuts including copy, cut, paste, maximize a window, and more.