How to solve the problem with Win7 system device manager without network adapter?

How to solve the problem with Win7 system device manager without network adapter?

First, the NIC driver is not installed

Solution: If there is no suitable driver file in the system driver installation package of the computer, the NIC driver cannot be installed, and I don't know the model of the NIC. You can copy a NIC universal drive from elsewhere to install it. After the computer can access the Internet, download and install the "Drive Wizard" or "Drive Life", run the software to scan the improper and uninstalled hardware drivers, and "Drive the life" as an example. ;

Second, the network card is bad

1, if the network card is damaged, it will also lead to failure to find the network card or network card driver installation. If it is a separate network card, it can be solved after replacing the new card; if it is an onboard network card, you need to enter the motherboard BIOS to shield the original network card, and then install a separate network card;

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