Note: If you have more than one worksheet selected, the Rows to repeat at top and Columns to repeat at left boxes are not available in the Page Setup dialog box. To cancel a selection of multiple worksheets, click any unselected worksheet. If no unselected sheet is visible, right-click the tab of a selected sheet, and then click Ungroup Sheets on the shortcut menu.

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لفتح كاميرا الويب أو الكاميرا، حدد زر البدء، ثم حدد الكاميرا في قائمة التطبيقات. إذا كان لديك عدة كاميرات، يمكنك التبديل بينها عن طريق تحديد تغيير الكاميرا في الجزء العلوي الأيمن بمجرد فتح تطبيق الكاميرا.

借助基于信誉的保护，可以更好地保护 Windows 用户免受可能不需要的应用 (PUA) 。

Step 2: Back up your folders. Windows Backup is an easy, single stop for all of your backup needs. Your free Microsoft account comes with 5 GB of OneDrive cloud storage (and more storage is available if you need it), and backing up your folders syncs the folders you specify to your OneDrive account, making them instantly accessible on all computers that you use with this Microsoft account.

Solution 4: Reset Surface. If you’re still having a problem with your touchscreen, try resetting your Surface. To learn how, see Restore or reset Surface for Windows and follow the recommended steps for "Reset this PC.". After the reset and device setup, use touch to open an application like Microsoft Edge or another web browser, and try to scroll pinch to zoom, swipe in from the right, and ...

Windows Hello 是登录到 Windows 设备的一种更个性化、更安全的方式。 在 Windows Hello 中，你可以使用面部识别、指纹或 PIN 登录，而不是使用密码。

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The recommended (and easiest) way to get SP1 is to turn on automatic updating in Windows Update in Control Panel and wait for Windows 7 to notify you that SP1 is ready to install.

sum_range Optional.The actual cells to add, if you want to add cells other than those specified in the range argument. If the sum_range argument is omitted, Excel adds the cells that are specified in the range argument (the same cells to which the criteria is applied).. Sum_range should be the same size and shape as range.If it isn't, performance may suffer, and the formula will sum a range of ...