What if there is no network adapter in the Win7 System Device Manager?

What if there is no network adapter in the Win7 System Device Manager?

First, the NIC driver problem

Install the driver: You can search for the latest driver according to your NIC model. If you don't know the model of your NIC, or you can't find a suitable NIC. drive. You can download and install the driver life, and then press the button to handle the automatic installation.

Second, the network card hardware problem

If it is a problem with the network card hardware, you must buy a new network card, if it is a discrete graphics card, you can directly replace it. If your computer is an integrated graphics card, you need to disable the original network card in the BIOS, and then install a separate graphics card. See the following figure for the specific operation:

After entering the BIOS interface, enter the integrated peripherals option shown in the figure, and change the onboard lan device to disabled.