Takeaway: Did you know that unless you uninstall a device driver on a Windows XP machine that it still may be sucking up valuable system resources? Here are step-by-step instructions on how you can view and remove these unnecessary devices. 概述： 您知道吗，除非你在使用Windows XP的机器上卸载设备驱动程序，否则该设备驱动程序可能正占用着珍贵的系统资源。这儿是您如何察看和清除这些不必要的设备及驱动程序的渐进教程。 《endurer注：1。suck up 吸收》
When you install a device driver on a Windows XP machine, the operating system loads that driver each time the computer boots regardless of whether the device is present—unless you specifically uninstall the driver. This means that drivers from devices that you have long since removed from your system may be wasting valuable system resources.
《endurer注：1。regardless of 不管, 不顾 2。long since 从前, 往昔》
Follow these steps to view and remove these unnecessary device drivers: 请按下面的步骤察看和清除这些不必要的设备驱动程序：
Press [Windows]+[Break] to bring up the System Properties dialog box. 按下[Windows]+[Break]调出“系统特性”对话框。
《endurer注：1。bring up 教育, 培养, 提出, (军队等)调上来, (船)抵达目的地》
Select the Advanced tab and click the Environment Variables button. 选择“高级”选项卡并点击“环境变量”按钮。
Click the New button below the System Variables panel. 点击“系统变量”面板下的“新建”按钮。
In the New System Variable dialog box, type devmgr_show_nonpresent_devices in the Variable Name text box and 1 in the Variable Value text box. 在新系统变量对话框中，在“变量名”文本框中输入：devmgr_show_nonpresent_devices，在“变量值”文本框中输入：1。
Click OK to return to the System Properties dialog box and then click OK again. 点击“确定”按钮返回“系统特性”对话框，接着再点击“应用”和“确定”按钮。
再次按下[Windows]+[Break]调出“系统特性”对话框。
Select the Hardware tab and click the Device Manager button. 选择“硬件”选项卡并点击“设备管理器”按钮。
In Device Manager, go to View Show Hidden Devices. 在设备管理器中，用菜单：查看->显示隐藏的设备。
Expand the various branches in the device tree and look for the washed out icons, which indicate unused device drivers.
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