Currently Being ModeratedApr 7, 2011 6:48 AM (in response to macberk)Try creating a fresh user account and check the Network preference pane under that one. Does the issue remain or are you able to use ethernet there? That will tell you whether the issue is account-specific or system-wide.
If it is system-wide, try rebooting the machine and holding down the "D" key after the startup chime to boot into Apple Hardware Test (this is usually installed on a partition of your HDD on newer machines. If not, you can pop in whichever install disc is labeled for AHT and do the same procedure). Run the "extended" test and see what the results are. It could be that your NIC has gone bad.MacBook Pro, Mac OS X (10.6.7)
Currently Being ModeratedApr 11, 2011 2:16 AM (in response to mberardinelli)Thanks, I've tried setting up the new user account but that didn't work neither. When logged as this user there's still no pci ethernet card available under about my Mac.
The hardware test doesn't show any problems, on connectivity there's only the mentioning of bluetooth. My airport connection works fine.
Could the internal connection have come loose, we've recently moved and the iMac might have experienced some vibration in the mover's truck. Is there a way to reach inside to take a look and somehow tighten the socket connection?
Currently Being ModeratedApr 11, 2011 4:51 AM (in response to macberk)It's possible that the vibration caused some "chip creep" in there. Unfortunately though there is no easy way of getting at it because you have to remove the glass display pane and LCD to get at the inside of these iMacs. Being that it is still pretty new, is it still under warranty? You could take it to an Apple Store and have them take a look at it.Apple Certified Macintosh Technician, Mac OS X (10.6.7), MacBook Pro 2.4GHz Core 2 Duo, iPhone 3GS
Currently Being ModeratedApr 25, 2011 1:59 AM (in response to mberardinelli)
My reply is a bit late because our son was born last week.
Thanks! I think that's the only possibility left for fixing this. Unfortunately it is out of warranty, so I'm curious what the costs might be for such a repair.
Currently Being ModeratedDec 1, 2011 12:01 PM (in response to macberk)
My computer has the same problem now so i was browsing for answers and bumped into your post...
I was wondering what the outcome was, did you had to take your iMac back to the apple store to get it fixed?
Currently Being ModeratedDec 2, 2011 12:33 AM (in response to macberk)
The Apple store sold me an USB ethernet dongle (as designed for Macbook Air) which works flawlessly. The repair would have cost me a lot of money and a couple of days without computer.