当在新设备中首次启动 Windows 10 时，设备上已安装的防病毒保护程序即是你的默认安全应用。但是，Windows 安全中心已预安装并可随时使用。

汇报默认屏幕和睡眠设置现在可帮助你更高效地使用能量并延长电池使用时间。 可以在 Windows 11 中找到效率设置 >系统 > 电源 & 电池。. 有关每个电源和电池设置如何提高设备性能的引导式演练，请单击按钮打开“获取帮助”应用：

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查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

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.

在新电脑上安装 Office Standard 或 Office Professional Plus 的批量许可版本时，可能会在每次启动 Office 时看到一个提示屏幕，即“让我们开始吧”屏幕。出现这种情况可能是因为在新电脑上安装 Office 的批量许可版本之前未卸载预安装的 Office 版本。

Teams 会議に Web 上で参加する. Teams アプリを持っていない場合でも、 Teams 会議に参加できます。 メールの招待で、[ 今すぐ会議に参加する] を選択します。 メールに記載されているダイヤルイン番号と会議 ID を使用して電話参加することもできます。

Informazioni sulla condivisione di file in una rete in Windows. Nota: Questo articolo illustra come condividere file o cartelle tramite una rete locale (LAN), come i computer connessi all'interno di un'abitazione o del luogo di lavoro.Se stai cercando di scoprire come condividere un file tramite Internet, ad esempio con un amico o un membro della famiglia, OneDrive offre modi semplici per ...

You'll be prompted to verify your identity. Choose whether to receive the code through email, text, or an authenticator app. Once you have the code, enter it in the text box.

Select Payment & billing, and then select Payment options.; Under Payment methods, select the payment method you tried to use to make the purchase.. For credit cards, debit cards, and direct debit, do the following: Select View or edit card and adjust the billing address as needed.; Select Save when finished.; For PayPal, do the following: If the email address is incorrect for your PayPal ...