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。

We believe that Microsoft Teams (free) is a place where minors can interact safely to build on friendships and meaningful community. We also know that keeping online experiences safe and positive involves more than building in permission settings and controls.

Battery saver is turned off.To find out if battery saver is turned on or off, select Start , then search for settings.Select Settings > System > Power & battery.If you want the best HDR video experience even when battery saver is turned on, select Battery saver, then turn off Lower screen brightness when using battery saver.For the best HDR video experience, Windows needs to be able to set ...

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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.

Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Before you start. Check these things before you start troubleshooting Bluetooth on your device: Check your product information. If you’re setting up a new device and Bluetooth is missing, check the product specifications to make sure it has Bluetooth capabilities.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Bluetooth 4.0 (or later) with Low Energy (LE) support. To find out if Bluetooth LE is supported, on each PC, select the Start button, type device manager and select Device Manager from the list of results, expand Bluetooth, and then select the name of your Bluetooth radio adapter. Right-click it, select Properties, select Details, and then select Bluetooth radio supports Low Energy Central ...

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