Hello again The USB LAN card works perfectly, I am almost sure that there is a problem in the motherboard. I will return it to Dell when arriving home. I consider it solved (although I do not know how a case is marked solved). Thanks for your help.
Lost LAN Ethernet cardI have a Dell Vostro 1320, and suddenly the LAN card disappeared. When I check the Network Connections folder, I see the Wifi (which works fine), I see the 1347, and Bluetooth, but no sign of the regular LAN card.I also searched in the hardware / device manger list, and the same is there.I tried to reinstall the “Realtek RTL-8100C Ethernet Controller” (R251067), and when it finished it gave the following message: “Please shutdown and plug Realtek PCIE card to complete the installation”My computer is only 3 weeks old, and I am stuck in China, and this is a real headache.
Lost LAN Ethernet card, Vostro 1320