How to remove the network card driver
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In Windows XP, there is no "uninstall / unplug device manager", and although the "view" option in the "device manager" has the "show hidden devices" option, it will not display the old network card that has been removed.
Method 1: "Show hidden devices in the command prompt" Open the command prompt in Windows XP, enter "set devmgr_show_nonpresent_devices = 1" and press Enter, then enter "start devmgmt.msc", open the device manager, select "View" "Show hidden devices" in the menu, expand "Network adapter", we will see the original network card, you can uninstall, so as to release the original IP address bundled with it.
Method 2: Modify "Environment Variables" Open the system properties window, select the "Advanced" option, and click "Environment Variables" below. In the current user variable or "System Variable", click the "New" button, enter "Devmgr_show_Nonpresent_Devices" in the "Variable Name" column, and enter "1" in the "Variable Value" column. Finally, click the "OK" button to close the desktop window, reopen the "Device Manager" in "System Properties", and select "Show hidden devices" to view the truly hidden devices at any time. This method can also be achieved by modifying the registry.
Open the registry editing window, expand "HKEY-LOCAL-MACHINE \\ System \\ ControlSet001 \\ coontrol \\ session manage", and create a new "string value" under the Environment key, named "Devmgr_Show_Nonpresent_Devices", double-click this key, Set the "data value" high to "1". Close the registry, restart windows xp or log in again, you can see the truly hidden device.
How to delete the network card driver (completely deleted)
Delete old network card information
The network card changed to another slot. When entering the system, there was an additional network card Realtek RTL8139 Family PCI Fast Ethernet NIC # 2 in the device manager. When I surf the Internet on a local area network, when setting an IP address for a network card, I am prompted with a conflict message, and setting is not allowed. How can I delete the old network card Realtek RTL8139 Family PCI Fast Ethernet NIC?
In Windows 2000, use the "Add / Remove Hardware" option in the "Control Panel" to delete the original network card. Start the "Add / Remove Hardware Wizard", select "Uninstall / Unplug Hardware-Uninstall Device" in turn, check "Show hidden" Device ", you can find the original network card and uninstall it.