通过使用一组有限的文件和驱动程序，安全模式可使 Windows 在基本状态下启动。 如果在安全模式下没有出现问题，你就会知道默认设置和基本设备驱动程序不是导致此问题的原因。

Helping users safely navigate web, app, and game content is one of Microsoft’s top priorities. If you live in a region that requires permission to create an account and access Microsoft services, you may be prompted to request or give parental consent.

Microsoft generally releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. (For exceptions, see Skipped releases.)Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families).For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

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Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

Set up PC folder backup. Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help & Settings icon then Settings.). Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help and Settings icon then Settings.)

Microsoft Edge 是 Microsoft 推荐的浏览器. Windows 8.1不再支持 Internet Explorer 11。 相反，我们建议切换到 Microsoft Edge。 Microsoft Edge 是为了给你带来最好的上网体验而建立的，让你在浏览网页时有更多自主性，并获得更多隐私保护。

In the To, Cc, or Bcc boxes, enter the recipients' email address or names.. As you start typing a recipient's name, Outlook will suggest the names of people you've emailed before. Those you've emailed most recently will be listed as Suggested contacts.You can pick a name from the list, type a full name or email address, or select the To, Cc, or Bcc button to see more options.

Learn how to download, customize, and troubleshoot Windows Media Player 12 with helpful guides and tips.