To learn the difference between protecting your Excel file, workbook, or a worksheet, see Protection and security in Excel. Select File > Info. Select the Protect Workbook box and choose Encrypt with Password. Enter a password in the Password box, and then select OK. Confirm the password in the Reenter Password box, and then select OK.

若要启用或禁用 DRR，请：. 选择 “开始 > 设置 > 系统 > 显示 > 高级显示 ”。. 在 “选择刷新率 ”旁边，选择“ 动态 ”选项。. ( 注意 ：此选项仅在支持的硬件上可用。. 如果未看到 “动态” 选项，则硬件不支持 DRR.) 如果要禁用 DRR 并使用固定刷新率，可以从 ...

Windows 11 Windows 10. When you're in a conference room and need to project, connect your PC using one of the cable connectors in the room, press the Windows logo key + P, and then choose one of the four options: PC screen only. You'll see everything on your PC. (When you're connected to a wireless projector, this option changes to Disconnect.)

Use Windows eye control. To turn on eye control, go to Settings > Accessibility > Eye control and turn on the toggle. Open Eye control settings. When you switch on eye control, the launchpad appears on the screen. For information on how to use the launchpad, go to Eye control basics in Windows.

To turn off the memory Integrity setting. Go to the Core isolation page in Windows Security. Turn the Memory Integrity setting Off if it isn’t already. You'll need to restart your computer for the changes to take effect. You can also open the Core isolation page by selecting Start > Settings > Update & Security > Windows Security > Device ...

Tip: If you've already set up speech recognition, pressing Windows logo key +Ctrl+S opens speech recognition and you're ready to use it. If you want to retrain your computer to recognize your voice, press the Windows logo key , type Control Panel, and select Control Panel in the list of results. In Control Panel, select Ease of Access > Speech Recognition > Train your computer to better ...

Zu beachtende Punkte. Um nach Updates zu suchen, wählen Sie Start > Einstellungen > Windows Update und dann Nach Updates suchen aus. Wenn Updates verfügbar sind, können Sie sie installieren. Wenn Beim Aktualisieren Ihres Geräts Probleme auftreten, einschließlich Problemen mit früheren wichtigen Updates, finden Sie weitere Informationen ...

Select the Start button, then enter settings. Select Settings > System > Display . In Display settings, select Brightness , then set the Change brightness based on content drop-down as needed: Off: Adaptive brightness control will be turned off and screen brightness and contrast will not be adjusted. This can result in shorter battery life.

COUNTIFS (criteria_range1, criteria1, [criteria_range2, criteria2]…) The COUNTIFS function syntax has the following arguments: criteria_range1 Required. The first range in which to evaluate the associated criteria. criteria1 Required. The criteria in the form of a number, expression, cell reference, or text that define which cells will be ...

Location history. Some Windows apps and services that use location info also use your location history. When the location setting is on, locations looked up by apps or services will be stored on the device for a limited time (24 hours), then deleted.