1, broadband connection prompts that the network cable is not plugged in properly. Generally, the network card is not plugged in properly or there is something wrong with the network card driver. It is recommended to reinsert the network card or reinstall the driver and try again. At the same time, pay attention to whether the network cable and network card interface are normal, and try to change a network cable.

2. In addition, if there is something wrong with the working mode of the network card, it will also affect the use. You can find the "My Computer" icon of the computer, right-click "Manage-Device Management-Point to Network Card" to find the network card, then right-click the network card and set the working mode of the network card to 10m half duplex.