I am working on a power mac G5. I recently lost all connection to my works servers, internet and email. It is saying that my built in ethernet cable is not plugged in and it can not locate my IP Address.
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Click the interface you use to connect to the Internet, such as AirPort or Built-in Ethernet.
If you use Built-in Ethernet: Type your DNS address(es) in the DNS Server field. If you have more than one, separate them with a comma.
If you use AirPort, click Advanced, then click the DNS tab. For each server, click the "+" button under DNS Servers and enter the address provided by your ISP or network admin. Click OK when done.
Mac OS X v10.4 or earlier:
From the Apple menu, choose System Preferences.
From the View menu, choose Network.
From the Show menu, choose the interface you use to connect to the Internet.
Click the TCP/IP tab.
Type your DNS address in the Domain Name Servers field. If you have more than one, press Return at the end of each to put the next address on a new line.
Click Apply Now.
You may experience a delay with the first connection after changing networks on a portable Mac. For example, you might use a MacBook at home with Wi-Fi, then take it to work or school and use an Ethernet connection. By default, Mac OS X uses one set of Internet preferences (known as a "location") named Automatic that will search your computer's modem, Ethernet, and AirPort interfaces until it finds the one that is connected to the Internet. You may experience a delay while your computer determines which network it is on. This can be easily differentiated from a DNS issue by creating a location that only contains one network interface. For more information, see Using network locations in Mac OS X.
If issues continue after trying the above steps, consider removing any manually-entered DNS addresses from the Network preferences pane. Select the address, then click the minus ("-") button. Note that dimmed addresses cannot be removed.
just connect both computers to the same router/hub. if mac is working then windows should work as well. on a wired network in windows xp and beyond, there is no set-up required. if it is not working, then perhaps you using a crossover cable (meant to connect 2 computers directly) instead of a regular ethernet cable.
When you encounter a server not found error, I've found it helpful to temporarily connect directly again with an ethernet cable. Then, open a browser window. Go up to the address line an delete what's there. The type in 192.168.1.1 ans see if the router says hi. If it does, get weird and tuen of the puter. Then unplug the router.
Sit down and have a beer
Then, reconnect the router to its power source
Make sure you have disconnected the ethernet cable from the router to your puter.
Then just get back online. Remember, even if I missed it this time I won't next time. If i missed something this time, forgive me. It sucks to ask ,cause I'm kinda smart, but I'm tired.
With a cable plugged in The Mac should automatically connect.
Try this. Leave the ethernet plugged into the mac and shut down the mac. Power it back up and see what happens - does the light on the router (1,2,3 or 4) come on to signify that the mac is talking to the router?
If not then I would think that there may be a problem with the ehtenet port on the Mac.
Also, open system preferences and then select network. Make sure ethernet is selected and then click on the TCP/IP tab. You should see a bunch of numbers listed - starting 192.168. or 10.0. and a line with lots of 255. If you get these and the top number differs from the bottom number then you should have a connecttion. If on the other hand you only have one line of numbers and it starts 169. then the mac is not talking out of the ethernet port at all.
If that is the case you should get someone in to look at it.
Post back and let us know what happened.
two things to consider. There are two different types of Ethernet cables out there. Perhaps you have a one way cable for the second one. To test this, unhook the working cable from the mac that gets internet and then hook that one up to the one that doesn't get it. See if it sees the network after a minute. The other issue might be in the Operating System. You might need to make sure that they are both up to date with all of the latest updates installed. (I know, hard to do with out an internet hook up.) Lastly, make sure you are plugging in the cable to the right place on the back of the router. Seems silly, but some of the best have accidentally put it into a link plug to connect several routers rather than an actual Ethernet plug.
To connect to Internet with cable:
1. Turn on your computer.
2. From the Apple Menu, select System Preferences, and select the Network icon. Click on the Built-in Ethernet connection, and then click Configure.
3. The Show drop-down menu should be set to Built-in Ethernet.
4. Click on the TCP/IP tab.
The Configure: pop-up menu should be set to Using DHCP
The DHCP Client ID should be left blank
Search Domains should be left blank
DNS Servers should be left blank
All other fields will be filled in automatically by the DHCP Server. Click Apply Now when you are done.
You should note the Ethernet Address for future reference. To do so, click on the Ethernet tab, and then write down the Ethernet ID. You may need this if it is not filled in automatically when you register your computer.
Close the Network preference pane.
You should be able to get online with Safari.
For Guest: Does your iBook 3G have an Airport card?
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it. Thanks, Joe