Last week my kids computer gave me a “network cable unpluged” even though the computer’s network cable was still plugged in.
The computer was using the NIC built into the ASUS A8V MB. So I installed a linksys TNC100TX PCI NIC and it worked fine for about a week. I assumed the MB NIC went bad.
Today I got the same error on the linksys NIC. Tried rebooting and the computer no longer recognizes the NIC. Card is plugged in, but windows doesn’t see it. I tried different PCI slots and same problem.
I swapped out for a D-Link DFE-528TX NIC. Computer recognizes the NIC, but it still says “network cable unplugged”
I tried swapping cables and ports on the router. no luck. I can use the same cable/port on a second desktop and my laptop and they connect no problem.
I tried reinstalling windows. no luck.
The MB NIC and the D-LINK NIC can ping 127.0.0.1 so NIC should be working.
I tried three different cables. no luck (all three work with other PCs)
Tried a linksys befw11s4 router. no luck. (router works fine with laptop)
Read an article on another site about RF interference messing up network cables so I moved the PC, still no luck. (my desktop is only 3′ away and its working fine)
DHCP services are running so hmm.
appreciate any help you can provide