修复 Windows 中的声音或音频问题 - Microsoft 支持
如果你要使用 usb 或 hdmi 连接音频设备（例如耳机或扬声器），则可能需要将该设备设置为默认设备。 如果你使用的外部监视器没有内置扬声器，请确保未将该监视器选为默认输出设备。 如果这样，无法播放任何音频。 可以在设置默认输出音频设备时进行此检查。
Contact - Microsoft Support
Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2
Erstellen eines Installationsmediums für Windows - Microsoft-Support
Ein USB-Speicherstick, eine externe Festplatte oder eine DVD. Ein leerer USB-Speicherstick oder eine leere Festplatte mit mindestens 8 GB Speicher oder eine leere DVD (und ein DVD-Brenner). Wir empfehlen die Verwendung eines leeren USB-Speichersticks oder einer leeren DVD, da andernfalls alle vorhandenen Dateien gelöscht werden.
Internet Explorer mode in Microsoft Edge - Microsoft Support
To return to browsing without Internet Explorer mode, you can click Leave on the information bar at the top of the screen, or close your current tab and open a new tab in Microsoft Edge.
Sign in to SharePoint - Microsoft Support
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.
Applies To:
SharePoint in Microsoft 365
Install Quick Assist - Microsoft Support
To pin Quick Assist to your taskbar so you can quickly get back to it, after Quick Assist is open, right-click (or press and hold) the icon on your taskbar > Pin to taskbar. If the old app icon still appears on your device, make sure you select the new app icon.
Open Control Panel in Windows - Microsoft Support
Learn how to access the Control Panel in Windows for managing your system settings and programs.
Install Office 2007 - Microsoft Support
When prompted, enter the product key. You can find the product key on the sticker on the CD case or other packaging. If you need help, see Find your Product Key for Office 2007.
Applies To:
Office 2007
How to start a scan for viruses or malware in Microsoft Defender
Tips: If you want a deeper scan, instead of selecting Quick scan in step 3, select Scan options and choose the type of scan you want.. For the most complete scan, run Microsoft Defender Offline. For more about that see Help protect my PC with Microsoft Defender Offline.
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
Reactivating Windows after a hardware change - Microsoft Support
In Windows 11, it is essential that you link your Microsoft account with the Windows 11 digital license on your device. Linking your Microsoft account with your digital license allows you to reactivate Windows using the Activation troubleshooter whenever you make a significant hardware change.