Software :: Ethernet Connection Stopped Working On MacBook

May 2, 2008

The ethernet connection has stopped working on my MacBook. It has worked previously but now says no cable is installed. I have looked at the port and no damage is noted. I tried a known good cable from another system to no avail

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Intel Mac :: Stopped Recognizing Ethernet Connection?

May 10, 2012

Airport is working fine, but the network port is having a problem. I have rebooted everything several times (cable modem, computer, wireless modem). I even reset the PRAM. Nothing works. I called Time Warner. After trying some things, they said there is something wrong with my MAC. I will probably take it into the Apple store, but I thought I would try this chat area first.

iMac, Mac OS X (10.6.8)

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Intel Mac :: Stopped Recognizing Internet Connection (Ethernet) After Announcing An IP Address

Feb 22, 2012

I had no trouble getting on line until last week when a message came on that

IP address

was in use by


DHCP Server 

Since that time, no matter if I plug it into one router or the other  (I use a router in my office to share the one ethernet cable that comes down the hall) it claims that the ethernet is working and it knows that it is connected to the Internet,but it cannot access the Internet. IT seems to be stuck in a cycle of navel-gazing, constantly focused on its own ethernet IP address.

All I know how to do is operate the thing; we have no IT person here. A visitor set up our network for us a few years ago. Only the iMac has this problem; my PC laptops go online just fine. But all my work is on the iMac.

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Mac Mini :: Ethernet Port Seems To Have Stopped Working?

Apr 16, 2010

I've been having an annoying problem lately. The ethernet port on my Mac Mini seems to have stopped working. It happened when I was switching routers. Most likely I just unplugged it from the old router, and into the new one. After that, no more connection, nothing changes when I plug something in.

As far as troubleshooting goes, I've plugged it into other ports, and into my MacBook Air (Just to get a Self assigned IP) and nothing works. I know these ports work with my other computers. I've reset the SMC and PRAM.It works in bootcamp so this makes me think it's not hardware. Any other suggestions?

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Intel Mac :: Ethernet And Wireless Suddenly Stopped Working?

May 30, 2012

2009 iMac running Snow Leopard. 

NO issues until this morning.  Put computer to sleep and it would not boot back up properly (stuck on Apple boot screen and it FINALLY came on after many tries).  Now my wifi or ethernet won't actually "connect" to the internet.  It says connected under network preferences and it's green, but I have no internet connection... 

iMac, Mac OS X (10.6.8)

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MacBook Pro :: Internet Connection Stopped Working - No WiFi Hardware Installed

Sep 1, 2014

Have a MacBook Pro.  WiFi connection stopped working a couple of days ago.  Message is 'No WiFi hardware installed'.

MacBook Pro, iOS 6.0.1

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OS X :: Ethernet Jack And Cable Stopped Working - Plugged Capsule

Feb 10, 2009

I usually use an ethernet cable to connect to the internet. I recently bought a time capsule and in trying to set it up i plugged the capsule into the ethernet jack and my ethernet cable stopped working. I connected my computer into the capsule and its not the cable thats broken. I'm currently lost on what to try next, when i connect my computer to the jack, it says "nothing is plugged in" or something like that.

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Hardware :: Ethernet Printer On Airport Network Stopped Working - How To Configure

Jan 21, 2010

I have a Mac/Windows home network with two airport extreme base stations. One is connected to my dsl modem. The other is used wirelessly to extend the network, and I have a Xerox Phaser 5500 connected to one of its lan ports. Until recently, all computers, connected wirelessly could share the internet connection and print to the Phaser. Due to a power failure, I had to reset both the Airport base stations. I can still connect to the internet, however I can not print from any of the computers.

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OS X :: Messenger Stopped Working - Connection Failed?

Jan 1, 2010

I have been using both messenger 7.0.2 and the beta version of 8 for some time. I have recently upgraded both to Snow Leopard, and changed my ISP to TPG (Australian ISP). Ever since, when I attempt to connect to messenger (either version) it says the connection failed as I am not connected to the internet. My internet works fine so I am at a loss as to what the problem is.

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OS X :: Connection To The Printer Stopped Working - Password Needed?

Sep 6, 2010

My daughter has a MacBook with OS X 10.4.11. Due to its age & configuration, the OS X can't be updated any further.

Her MacBook is networked through my iMac (OS X 10.6.4) and is setup to print via my printer.

The connection to the printer stopped working, I tried to troubleshoot it, but needed the admin password. She didn't know if she had one so I used the installation disk to change eliminate the need for one. But for some things I'm asked for the keychain password, she doesn't remember if she has one.

According to the keychain help, the keychain password should automatically be the same as the admin or login password. There isn't a login password anymore, and keychain isn't accepting a blank password,so I'm locked out of some functions requiring the keychain.

I created a new keychain, but when online, I get a lot of unverified certificate errors. I try to change them individually to accept them, but I'm asked for the keychain password. If I can access the old keychain, is there a way to copy all of its certificates to the new keychain?

I can't figure out how to change the keychain password for the old keychain as without it, I can't accept certificates even with the new keychain. I'm really stuck.

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OS X :: DVI-HDMI Connection To External Display Stopped Working?

Mar 10, 2010

I have a macbook pro from fall of 2007. So far it has worked perfectly and I've used it with an LG full hd LCD for about 1,5 years. I use a regular DVI - HDMI cable.About a month back it suddenly stopped working. The TV just tells me "No signal".I didn't change any settings or anything. The computer still recognizes when something is plugged in as the screen flicks blue and the displays icon in the menu bar lists the TV with correct model and resolution. And if I have spaces turned on it changes from 4 to 8 "screens".

I have tried everything from rebooting the computer to resetting P-RAM.
I got a new cable, no difference. However when I tried the TV with my friends MBP, it worked. So the problem is definetly in my computer, not in the TV or cable.My OS X is Version 10.5.8 Leopard.

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OS X :: Apple Wireless Keyboard Stopped Working / Lost Connection With Mac?

Sep 26, 2006

im writin this message usin os x's keyboard viewer so its gonna be short.

i got an 20'' imac with apple bt wireless keyboard [i dont know if its relevant but i got xp installed w/bootcamp],it worked fine untill 2 days ago , it suddenly lost connection with the mac,i tried updatin / replacing batteries / and pairing it,it saying that the connection established with the keyboard but nothing works...

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PowerPC :: Airport Card Connection Suddenly Stopped Working

Oct 12, 2007

Last week, my airport connection suddenly stopped working (and I mean JUST as I was working on it, it started failing). It would connect to the network fine, but it could not communicate with the router through DHCP and even with a static IP, it could not transfer any network data. I put in my brother's working airport card, and it worked, so I ordered a refurbished airport card from I put that in today, and it is showing the same symptoms of my old card. I don't have my brother's PowerBook to test his card again, so I don't know what to do.

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Windows On Mac :: Internet Connection Sharing On Vista Stopped Working?

Dec 3, 2009

I'm trying to share the internet connection on my windows vista partition. Until now it has been fine, but all of a sudden, yesterday, it stopped working. iPhone and mac both show self assigned IPs. I tried resetting and setting up a new ad hoc network and checked settings to make sure internet sharing was enabled, but still the mac and iPhone are not given their own IPs.

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Software :: Apple Bluetooth Keyboard Stopped Working / Itunes Stopped Working

May 13, 2009

I installed 10.5.7 yesterday. Immediately after the installation was complete, my Apple bluetooth keyboard stopped working. Went into Bluetooth system settings, and it said that there was no bluetooth hardware found... (it's built into the machine!!)...

Also, every time I start iTunes, it gives some weird error about Adobe Flash player. I'm not at home now so I don't have the exact wording of the error with me, sorry...

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OS X :: Mail Just Stopped Working - Connection To The Server On Port 143 Timed Out?

Jan 29, 2008

today i found that Mail has stopped working for no obvious reason.It wont send or receive emails, but when i check by signing into .mac itself, the messages have arrived and everything appears normal.Mail won't quit either... then every so often a box with the following text appears:'Some actions taken while the account 'enter.mac address here' was offline could not be completed online.Mail has undone actions on some messages so that you can redo the actions while online. Mail has saved other messages in mailbox "on my mac" in "on my mac" so that you can complete the actions while online.Additional information: The connection to the server "" on port 143 timed out.

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MacBook Air :: No Connection Via Usb / Ethernet Adaptor

Feb 3, 2012

I tried to connect my new MacBook Air to an ethernet network via the supplied usb to ethernet adaptor.Nothingn happened, and 'ethernet' did not appear in the system prefs/network window.I tested the connection on another machine and it works fine.I tried both the usb ports on the Air.

Info:MacBook Air, Mac OS X (10.7.2)

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MacBook :: How To Share Internet Connection Through Ethernet

Apr 26, 2008

I have an ibook with Leopard installed and its connected to the internet through airport. What I'm trying to do is share the internet connection to my xbox via an internet cable but i cant find any settings in system preferences to do that.

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MacBook Pro :: Ethernet Connection / Data Transfer From PC?

Mar 21, 2010

I just purchased an external HD for my Powerbook G4.

Im trying to transfer my old media from my PC to my Mac.

I've had difficulties partitioning a section of the hd on my pc that will be compatible with mac because the pc will only partition in one format (NTSF I believe).

So my questions are:

Can I connect the two via ethernet?

Or is there some other solution I have not come across?

I've searched for an answer but most help instructions are not according to the exact specs I'm dealing with.

I'm running Windows XP on the PC and Osx 10.4.11 on my 1.5 Ghz Powerbook G4

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OS X :: Direct Ethernet Connection Between Macbook And Imac Won't Work

Dec 4, 2009

I have an ethernet cable. i have an alu macbook. i have an iMac. i need to transfer files between the two. tried connecting the ethernet cables. on the macbook it says "ethernet cable not plugged in"

on the iMac it says "ethernet cable not plugged in".

i know the ethernet cable works because i brought my macbook up to my router and used the ethernet cable to connect to the internet. it is Cat5 or whatever. i've tried everything static IP addresses. restarting. replugging. over and over and over. no luck. the macs just pretend there is no ethernet cable plugged in. tried DHCP. tried manually. but it works when i connect my macbook to my modem.

i've tried everything. i've googled, i've mroogled. nothing works. i spend two hours trying to work this out myself before coming here. every single webpage online just says "oh just turn on file sharing LOL then it works" not for me it doesn't. i've tried that. i've tried it over and over and over again. it doesn't work for me. still won't recognize.

i'd use wireless connection to transfer but that'd take like 20+ hours to send 60GB+ of data. too long (iMac is not at my house) are ethernet cables just fail? this is a BRAND NEW 20 inch imac and a aluminum macbook from 2008.

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MacBook Pro :: Use A Direct Ethernet Connection To Access Point?

Feb 20, 2012

I created an access point from a router. My question is if I can get a faster connection to devices near to the access point with the direct connection or will a direct connection not work with an access point?

MacBook Pro, Mac OS X (10.7.3)

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MacBook Air :: Unable To Connect To Home Internet Connection With Ethernet Adapter

Aug 3, 2008

i've recently got the Ethernet adapter for MBA and I am still unable to connect to my home internet connection... It continues to give me a "self-assigned IP".

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MacBook :: USB Not Working - Suddenly Stopped Working

May 31, 2010

My MacBook's USB that near the shift key suddenly stopped working. Other works fine. cause I need to have both ports work. HOW do I solve this?

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MacBook Air :: Ethernet Not Working On Air

Aug 28, 2008

I can't get ethernet to work on my new MacBook Air. I bought the USB Ethernet Adapter for MacBook Air, and it's plugged in, but still the ethernet wire doesn't seem to get any contact.I can see the USB adapter in setting for network, so it seems to to be connecter with my Air.THe other thing is that my friend bought himself a Laptop PC, and he used the SAME ethernet wire, and it worked right away.

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MacBook Pro :: Ethernet Is Not Working?

Aug 29, 2014

Im in my college dorm room and instead of wifi you're able to connect by using an ethernet cable.

Now the problem is when i open safari, the type in a website and it only loads about 20% of the way and then stops.

The ethernet usually works but for some reason today it doesn't work.

Its funny because my room mate on the other side of the room is using his ethernet no problem

MacBook Pro, iOS 7.1.2

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OS X :: Using Ethernet Port Connection

Jun 14, 2009

I used the MacRumors Buyer's Guide for several months to find the best time to buy a MacBook. I'd never had a Mac before and found it to be so valuable. I hope someone in the forum can be as helpful as the site has been.

Yesterday I bought a new MacBook Pro 13" and as a store option the RAM was doubled to 4GB. Everything has worked well so far, in both OS X and Windows XP through Boot Camp, except for either OS accessing the LAN cable on my home ADSL. Both my portable modem (EMobile network in Japan) and the wireless seem to work with no issue, and both OS will recognize the ethernet port. I'm concerned that perhaps the ethernet adapter was modified when the store installed the memory.

I can remove the ethernet cable from one computer (where it works without any settings changes on my Windows notebook) and plug the same cable into the MacBook and it will not be recognized. The Mac OS error is that no cable is inserted.

However, as it's my first Mac, I didn't know if perhaps some new settings are required to make things work smoothly. Is there any DNS settings etc. that must be set for it to connect? Also is there some kind of connection diagnostic that will specify the location of the error in the machine? I'd like to exhaust any option before shipping this back to the store to be repaired or replaced.

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OS X :: Mac To PC Internet Connection Via Ethernet

Nov 23, 2009

I am sure this may have been asked before , but I am having a problem finding an answer. I have an iMac (2008) and my wife has a ACER E500 PC (No WiFi connection), running Windows XP Media Edition. The only internet connection we have is to my iMac, so as both my iMac and my wifes PC both have Ethernet connections , I am trying to share my iMac internet connection to my wifes PC via an Ethernet cable, I am having no luck in getting it working.

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MacBook Pro :: Headphone Line Working On Macbook Pro - Stopped Working?

May 31, 2010

My headphone jack was working just fine until this morning when I opened my computer. It's plugged in, but the sound keeps going through the head speakers. I have done the system preference check to make sure it is not muted.

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MacBook Pro :: Ethernet Port Is Not Working?

Mar 26, 2012

My ethernet port is not working when cable is plugged in. Wireless works fine. Ethernet was working up until end of Feb. Then I turned it on and it wouldn't connect. Plugged into a friend's house still not working. Tried at work, still no luck. (I'm on a MacBook Pro late 2008)

MacBook Pro (15-inch Late 2008), Mac OS X (10.6.8)

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MacBook Pro :: Internet Over Ethernet Is Not Working

Jun 6, 2012

I usually have all my computers, mac or pc, connected over Ethernet and only use Wifi for phones and guests. A while ago i started not to be able to connect to the internet anymore, although i hadn't changed anything on the mac or my router. I tired all possible troubleshooting routines to get to the bottom of it but with no success. Reset network ports in System prefs, Cocktail maintenance, Repairing disk and permissions booted from recovery partition, deleted SystemConfig files, reset the router to factory settings and reconfiguring, checked DHCP settings for ip conflicts, just nothing works.

I can connect to the internet over wifi without problems on the Macbook Pro.I can connect over ethernet to all other shared devices and computers on my network.When i run the Network Diagnostics with Ethernet as primary interface all lights are green and it says my connections are working but i cannot connect to any internet address, all pings time out with any port or protocol (ftp, mail, http, ssh)Other PC's and Macs can connect over ethernet to the internet without problems using the same cable.

MacBook Pro, Mac OS X (10.7.4), MID-2010 MBP 17"

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