Currently Being ModeratedAug 8, 2013 3:14 AM (in response to Step45)
If the USB to Ethernet also went dead then it might not be the built in port. It might be some corruption in the OS and specifically the drivers for the Ethernet port.
Try installing OS X on an external drive and run the system from that. If the built in port works then it is the internal drive that is corrupted and not loading the drivers for that hardware.
Currently Being ModeratedAug 8, 2013 3:29 AM (in response to LowLuster)
Is there a way to reload the corrupted drivers without a complete format and reinstall?
Currently Being ModeratedAug 8, 2013 4:08 AM (in response to Step45)
USB and Firewire information:
Firewire Port failure:
Currently Being ModeratedAug 8, 2013 4:24 AM (in response to LowLuster)
My Mac did not come with CDs. How would I go about loading the OS X on an external drive?
Currently Being ModeratedAug 8, 2013 4:52 AM (in response to Step45)
Boot the system from either the internal Recovery HD partition, Command+r when starting the system, or the Online Internet Recovery system, Command+Option/Alt+r keys and hold them down until you see a globe on the screen.
Have the Ethernet cable connected while doing that and if the Ethernet port works you know right then if it is a corrupted driver or the LB has problems.
Currently Being ModeratedAug 8, 2013 2:23 PM (in response to LowLuster)
I bought a 1TB WD My passport. I installed OS X Lion, and still had no ethernet. I am guessing I need a logic board?
Currently Being ModeratedAug 8, 2013 2:25 PM (in response to Step45)
Yup, Sorry to say but it does look that way.
Currently Being ModeratedAug 8, 2013 4:52 PM (in response to LowLuster)
Thanks to everyone who helped me. I really appreciate all that you have done!
Now Best Buys Geek Squad gets my IMac for 4-6 weeks to replace the logic board. What a JOKE!! I dont recomend buying anything from GEEK SQUAD unless you can be without your equipment for 4-6 weeks.
Currently Being ModeratedAug 29, 2013 4:39 PM (in response to Step45)
The part what i dont get is why do we need a complete new logic board while perhaps it's just a bad connection point of the port connector it self. Isnt it weird that a complete board needs to go in? Why dont they have connectors with small seperate connectors so the port can be replaced much faster and quicker. This would loose a bit in speed perhaps but would cost about $800 when needs to be fixed????
Currently Being ModeratedAug 29, 2013 5:26 PM (in response to Step45)
You could have tried any other manufacture of USB or FireWire/Thunderbolt to Ethernet cable besides Apple's
Unless your USB connectors have also failed on the logic board.
Currently Being ModeratedNov 30, 2013 8:55 AM (in response to Step45)
here is what i did, The drivers for the network cards seem to have an issue with a buffer overflow apparently, changing the hardware configs in advanced brought it back alive in seconds. here is a link to the video that explains what to do
i also tried resetting smc and pram, reinstalling, fixing disk permissions, adding a manual address, and this is the only thing that worked
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