The reason why there is no network adapter in the Win7 system device manager and the solution

network adapter is the interface connecting the computer and the transmission medium in the LAN. In the correct case of Win7 system, the device manager can find the network adapter.
Reason 1: The NIC driver is not installed

Solution:

If the system driver installation package does not have a suitable driver file, the NIC driver cannot be installed, and I don’t know. For the model of the NIC, you can copy a NIC universal drive from other places to install it. After the computer can access the Internet, download and install the software such as “Driver Wizard” or “Drive Life” and run the software to scan the improper and uninstalled hardware drivers.

Reason 2: NIC is bad

If the NIC is damaged, it will also fail to find the NIC or NIC driver installation failure.

1. If it is an independent network card, it can be solved after replacing the new card;

2. If it is an onboard network card, you need to enter the motherboard BIOS to shield the original network card, and then install the independent network card.

3, boot press DEL key to enter the BIOS, select integrated peripherals (green box), enter, you can see that there is an onboard lan device inside, press the page up of the function key area Or page down, select disabled.

The above is the introduction of the reason and solution for the lack of network adapter in the Win7 system device manager. Russian friends with the same problem can follow the above methods to troubleshoot and solve the problem according to the corresponding solution. .