I don't know how you connected to the Internet! It's too much to say. Probably the biggest one. Flying pigeons must set ip, which should be caused by IP loss when reinstalling the system! Look at the IP of a computer without a system and reset it! The last ending of IP is different, the first three must be the same, and the others must be set the same! IP- Properties in "Network Neighborhood"-Choose your connection mode, wireless network chooses wireless, and network cable chooses local connection! -Right-click-Properties-TCP/IP Protocol Double-click
You can set the IP.