A. Confirm that the network ID in the lower right corner of the computer is Connecting;
B. If the network is disconnected, check whether the RJ45 network port of the motherboard&the network cable&crystal head and router of the network have problems.
C. If there is a yellow exclamation point at the network identifier, check if the network chip driver has installed OK;
Method: Right-click "My Computer", select "Manage" in the pop-up dialog box, and then click Open in the dialog box , click to open "Device Manager", it will display all devices on the computer, select "Network" Adapter" click to open, confirm whether the network chip driver is installed OK, if there is an exclamation point, you need to re-install the driver to solve.
D. If the motherboard's network chip is damaged, repair th