My analysis is: 1. Your network card driver is not suitable. You have to find a suitable driver that matches your network card brand. 2. You have to delete the hidden network card driver. I I am willing to follow up on your problem. You can keep contacting me until your laptop is fine.

Delete the hidden network card driver. In the "Device Manager" of the computer, many people have the following name after the network card: What are the words "#2" and "#3" (as shown in Figure 1)?

If there is only one network card in your computer, then such words indicate that the The network card driver has been installed on your computer at least twice.

Why does this happen? This is caused by you changing the expansion slot of the network card. Intentionally or unintentionally, you may replace the network card from one slot to another in the chassis. During the replacement, even if you did not uninstall the driver of the network card before replacing the slot, the system will still be damaged after the replacement. You are required to reinstall the device driver. For plug-and-play network cards, the system will automatically install the device driver. In this way, the same driver for the same network card will be installed repeatedly.

For the network card that was installed before the slot was replaced, its driver still exists in the system after the slot is replaced, but due to the loss of support for the network card, it can only be hidden in the system like a "shadow" , we call this kind of network card a "shadow" network; the network card whose driver is installed again after replacement has its "shadow" stored in the system, so it can only be named after the name of the "shadow" network card. Added words like "#2" and "#3".

"Shadow" network cards can sometimes cause trouble for your system. For example, if you assign an IP address to a "shadow" network card, you change the slot and assign the same IP address to the network card again. , the system will prompt that the IP address you are currently assigned has been used by another network card in the system, and require you to reassign the IP address to the network card.

Tip: The "shadow" network card is actually disabled in the system. When you assign an IP address to the network card and a prompt appears that the currently assigned IP address conflicts with the IP address of the "shadow" network card, you can Ignore the prompt and forcibly assign the IP address to the network card. But I still recommend that you use the method introduced by the author below to completely delete the "shadow" network card.

So how can I delete the shadow network card? Some media said that these "shadow" network cards can be displayed by selecting "View → Show Hidden Devices" in "Device Manager", and then double-clicking the network card to open the "Properties" dialog box of the network card. In the "Properties" dialog box of the dialog box, Click "Uninstall" on the "Driver" tab to delete the "shadow" network card.

The author solemnly declares here that this statement is pure nonsense that cannot stand the test of practice, because according to this method, we cannot see the "shadow" network card at all, let alone Uninstall the driver for the "shadow" network card. Next, let’s look at the author’s method of deleting the “shadow” network card (the following introduction has been tested in Windows XP).

Click "Run" in the "Start" menu, then enter the "CMD" command in the "Run" dialog box to open the command prompt window. First enter the command "set devmgr_show_nonpresent_devices=1" and press Enter. Then enter the command "Start DEVMGMT.MSC" to open the "Device Manager". Now, select "View → Show Hidden Devices" on the menu bar of the "Device Manager" to see the hidden "shadow" network card. Double-click the "shadow" network card to open the "Properties" dialog box of the network card, switch to the "Driver" tab, click "Uninstall", and the "shadow" network card will be completely deleted from your computer.