Select Virus & threat protection > Protection history. The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive. You might be prompted for the BitLocker recovery key during startup, due to a security risk or hardware change:

Windows 11 Windows 10. 1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections. 5. Check sound settings. 6. Fix your audio drivers. 7. Set your audio device as the default device. 8. Turn off audio enhancements. 9.

调整桌面图标的大小. 右键单击（或长按）桌面、指向“视图，然后依次选择“大图标”、“中等图标”或“小图标”。. 提示: 你也可以使用鼠标滚轮来调整桌面图标的大小。. 在桌面上，长按“Ctrl”，同时滚动滚轮来放大或缩小图标。. 有关如何显示或隐藏 ...

使用 Cookie 预加载页面以加快浏览速度. 了解如何在 Microsoft Edge 中查看、管理和删除 Cookie。

Alarms and timers work even if the app is closed or your device is locked. If you see a warning that notifications only show if the device is awake, make sure your device doesn’t go to sleep (Go to Start > Settings > System > Power & battery , then select Screen, sleep, & hibernate timeouts to adjust your device’s sleep settings).

On the External Data tab, in the Export group, select PDF or XPS. In the File Name field, type or select a name for the document. In the Save as type list, select PDF (*.pdf) . If the document requires high print quality, select Standard (publishing online and printing) .

Inserting a document. You can insert the content of previously-created Word documents into a new or different Word document. Click or tap where you want to insert the content of the existing document. Go to Insert and select the arrow next to Object. Select Text from File.

With HDR in Windows 11, you get the most of out your high dynamic range (HDR) TV or PC display. When you connect your HDR10-capable TV or display to a Windows PC that supports HDR and wide color gamut (WCG), you’ll get a brighter, more vibrant, and more detailed picture compared to a standard dynamic range (SDR) display.

Calendar is the calendar and scheduling component of Outlook that is fully integrated with email, contacts, and other features. Just as you write in a notebook, you can click any time slot in the Outlook Calendar and start typing. By using the Calendar you can create appointments and events, organize meetings, view group schedules, and much more.