单项选择题 You have a computer that runs Windows XP Professional. You download new video card driver from the Internet, and then install the driver. You restart the computer. You discover that the newly loaded video driver is named VgaSave.  You need to restore the previous version of the video card driver.What should you do?（）

单项选择题 Youconnectanexternalmonitortoaportablecomputer.Youneedtoincreasetheavailabledesktopareatoincludetheexternalmonitor.Whatshouldyoudo?（）

单项选择题 You have a computer that runs Windows XP Professional. You replace the video graphics adapter in the computer and restart the computer. You discover that the hardware acceleration features of the video graphics card fail to function. You verify that the new video graphics adapter is certified for Windows XP Professional. You need to ensure that the hardware acceleration features of the video card function. What should you do?（）