Try Microsoft Update or contact your company help desk. To download an update manually, see Office Updates. Go to Control Panel > Programs > Uninstall a program. Find and select your version of Microsoft Office on your computer. In the bar above, click Change. Select Quick Repair > Repair. If this does not work, retry the steps, but choose ...

Windows 10. Optimizing your drives can help your PC run smoother and boot up faster. To optimize them: Select the search bar on the taskbar and enter defrag. Select Defragment and Optimize Drives. Select the disk drive you want to optimize. Select the Optimize button.

Select Start > Settings > System > Sound. In Input, select the microphone that you want to test. In Input settings, look at Input volume while speaking into the microphone. If the bar moves while you speak, your microphone is working properly. If don't see the bar moving, go to Test your microphone and select Start test.

在任务栏上选择“ 搜索 ”，输入 设备管理器 ，然后从结果中选择它。. 选择“ 相机” 旁边的箭头以展开列表，检查查看是否列出了以下适配器之一：. Intel (R) TGL AVStream 摄像头. Intel (R) AVStream 摄像头. 双击相机，选择“ 驱动程序 ”选项卡，然后选择“ 卸载 ...

To find out if your PC supports this, select Settings > System > Display. Select Brightness, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature. This automatic setting helps make sure your screen is readable wherever you go. Even if you use it, you can still move the Brightness ...

Select Start , enter Quick Assist, then select it in the list of results (or press the Windows key + Ctrl + Q). In the Code from assistant box, enter the 6-digit code they gave you, then select Submit. To allow the connection and start sharing your screen, select Allow. When someone is helping you, they might request full control of your PC.

IF 函数 - 嵌套公式和避免错误. Microsoft 365 专属 Excel Microsoft 365 Mac 版专属 Excel Excel 网页版 更多... IF 函数允许通过测试某个条件并返回 True 或 False 的结果，从而对某个值和预期值进行逻辑比较。. =IF（内容为 True，则执行某些操作，否则就执行其他操作）. 因此 IF ...

Tip: If your can't get the code by email or phone, you might be able to enter an email address that's different from the one you're trying to recover. Go to the Recover your account page and follow the prompts.

有効期限の状態を確認する. [ サービスとサブスクリプション] ページに移動します。. メッセージが表示されたら、 [ サインイン] を選び、Microsoft 365 サブスクリプションに関連付けられている Microsoft アカウントのメール アドレスとパスワードを入力します ...

安装 Windows 7 Service Pack 1 (SP1) Windows 7 支持已于 2020 年 1 月 14 日结束。. 我们建议你转到 Windows 11 电脑来继续从 Microsoft 接收安全更新。. 获取 SP1的推荐（并且最简单）方法是在“控制面板”中的“Windows 更新”中打开自动更新，然后等待 Windows 7 通知你 SP1 已准备 ...