The computer is directly connected to the network cable, and the packet loss rate is extremely high. It is normal to plug the network cable into the router and then transfer it to the computer.

First of all, to be sure, your router must be set up before you can surf the Internet. Can you tell me what broadband you are calling? Is it optical fiber or network cable? Do I need to enter my account number and password to surf the Internet through the "broadband connection" on my computer? Or you can connect to the internet directly with a network cable, and then you will know how to set it up and wait for you online.