My problem is that the onboard LAN (marvel jukon) stopped working suddenly when I turned on the PC. The LAN has only an orange led on, and the green led is off... the cable is ok. I open the case and looked inside but everything is okey... when I reinstalled the windows server 2008, the same happend, it didnt detected a network adapter, also when the driver is installed... the bios is okey too... what is happening ? What else can i do to test the network adapter ?
have you tried a different cable and did you check both ends for a link light?
Double check the port you are going to on the hub/switch/router.
Internal NIC may be blown.
Thanks for your replay ! The cable is ok, I connected it to my PC and worked perfectly. What do you mean with the port in my router ? If it worked in my PC with same port on router, I think is the LAN, because the motherboard doesnt detect the LAN onboard, but the BIOS detect it and when I disable it, it stop working... What is happening :(