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Onboard Lan causes boot and shut down problem

With Ethernet cable connected, POST Code F - computer will not POST. Remove cable - good to go. XP software shutdown with cable connected brings computer to shutdown then it restarts in 2 seconds. Remove ethernet cable and problem is gone. Disabling the on board lan in the bios also eliminates the problem. Turning off the LAN wake up feature does not correct the problem. This is the third AA8 that I have had this problem (2 RMAs) I believe that the network signal being applied to the board from the lan is interfering with the system startup soft switch but I can't find reference to this problem and don't understand the electronics well enough to resolve the issue in any way other than disabling the on board lan and using a NIC. Any additional information would be appreciated. AA8 P550 Antec Neo Power Supply

Posted by Jeff Liss on

  • mm23 Dec 06, 2008

    yupe only recently I having this problem.....I also trying to update my Bios but doesn't allow me ....and now i've reset it to default. Also having new problem like everytime when booting I need to press F1 to continue booting...can help...mikey


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It sounds like you have some bad LAN circuity on your motherboard. You might try a workaround by installing a separate LAN card and using that. If the separate card doesn't solve the problem your motherboard is just bad and needs to be replaced.

Posted on Apr 15, 2007

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Related Questions:


How do i replace the ethernet card on el1300g-01?

Hi Janet...the e-Machines, el1300g-01 has onboard ethernet (meaning it's integrated into the motherboard) and so it will be a multi-step process. Additionally, this motherboard only has one expansion slot, PCI-EXPRESS MINI and this means there can't be anything else in that slot.

Begin by backing up all your important data, preferably to an external drive. We all skip this step and at one point or another we all regret it.

Now, before shutting the PC down let's disable the built-in ethernet. Right click on My Computer (or This PC in Win81) and select PROPERTIES.

From the next screen (PROPERTIES) select Device Manager.


When you get to the device manager find the entry for network and (assuming this is the only network connection you have) after expanding the dropdowns

, right click on the appropriate device and select DISABLE:

No you can shut the computer down and disconnect all cables, most importantly, the power cable.

Remove the screws from the back of the machine and slide off the cover (see the eMachines support site for assistance).

Lay the tower on its side, and make sure the slot is empty it will look something like this:

Remove the punch-out by removing the screw and then the small metal cover (see arrow).

Inser the new card carefully into the slot on the printed circuit board while guiding its small metal tab into the bottom of the punch out. Make sure it's gently and firmly in place and then secure with a standard PC screw--either from teh punchout or one that came with the card.

Remplace the cover on the PC, reattach all the cables and turn it on.

When the eMachines logo flashes on the screen look in the lower left corncer and press whatever key it is for SETUP or BIOS (usually DEL, ESC or f12).

Using the the ARROW KEYS on the keyboard (the mouse will not work in this mode) go through the menus on screen to select networking. Here you will find a setting that will say ONBOARD LAN or ONBOARD ETHERNET. Select and disable this, and then press F10 to save and exit.

The PC will reboot and upon entering windows, you should get a discovered new hardware message and any drivers will install themselves*.

Connect the internet cable and you are good to go!

Hope this helps,
Mikeal Segotta
Ocean Shores PC

*If your new ethernet came with a disk of software, follow the instructions that came with it before troubleshiooting on the WIndwos side.

Why does my ethernet not work properly?

In order to decide wheather it is a HW or a SW fault, try to boot another operating system, eg. some one-CD Linux testing distribution. In case it is a SW problem:
- try to instal Asus update (utilities):
ASUS Update V7.17.17 for Windows XP 32bit/XP 64bit/Vista 32bit/Vista 64bit/7 32bit/7 64bit from:
- try to set in BIOS: POST Check LAN Cable: ENABLE (for both LANs). Any error message?
- try to switch off one of LANs: Onboard 1st(2nd) nVidia LAN: DISABLED. Does the other LAN work?
The last step could be testing different version of BIOS...
The easiest way to get LAN ready could be installing PCI LAN card...

I have a IBM thinkcenter 8123 model. I can't install lan due to lac of suitable driver! pls help me!

Go into the bios on your computer and shut down the onboard LAN, find a 3com or realtek LAN card and install it, windows has the drivers build in for most 3com cards, then you go to IBM site, download the drivers you need for the onboard LAN connection, remove the 3com card let the computer boot up, and when it asks for the driver point it to where you downloaded the drivers for the onboard LAN.

The internet providers technical person connected the cable and told me that your lan card is faulty so change it. my lan card is inbuilt on motherboard

Unplug your power cable; Take off your casing cover; make sure your hand is dry and clean, install your LAN Card to the right slot (Please refer to your Network Card Manual Book); Power On your PC, Press Delete at boot screen until u login the bios screen, go to the Advanced Tab on the top there, Select [Disable] for Onboard Lan; Then save & exit. You're done well! Congrat!


Replacing ethernet PCI card 10/100 by gibabit 1000

When you replace and install LAN card you need to install also the driver. Be sure that your onboard ethernet PCI card are disabled in BIOS. So that the new install LAN card are working.


Need an onboard ethernet driver


You can download the required drivers from:

Hope this solves your problem. For more help and clarifications, please reply to this post. Thanks

Network connection prompt error 6: handle is invalid

Hi glamredhel, Norton has removed the virus or Trojan & if you have windows system restore turned on the virus or Trojan will return once the system has re-booted. Open windows device manager & shut off system restore. Re-boot your system & re-scan your system with Norton. In your case Norton did not give you instructions on how to remove the virus. (Norton did that for you).
Once completed check windows update service for a possible update for your LAN. Asus does not have a separate LAN driver listed on Asus web site. The LAN driver is part of the chipset drivers. Remove your modem from the system & any software you installed with it. (If any). Restart your system. (If the system seems fine-good. Shut down the system & re-install your modem & any software. When completed do another windows restart. See if the modem functions (If your modem is either a cable or DSL reset it.
Shut down the system.
Located on the back of the cable modem or DSL modem you will find a tiny re-set button. Unplug the power cord from the modem. Take a pen & press the reset button for 10 seconds. Re-connect the power cord & boot the system. Check for internet connection.

The above are just a few item you should try.
Good luck glamredhel!
Post your findings.


When I put the computer to "sleep" it decides to come back on by itself. This happens frequently, but not all the time. What could be causing it to do this? Also, if I shut the computer down,...

Sleep on Vista is a combination of Standby and Hibernate. First it will go into Standby and then later if a laptop it will go into Hibernate. Any movement of mouse or keyboard may cause it to wake up.
Some computers will wake on Lan. If you have ethernet connected this may be the cause. You can turn this off by using Device Manager - Hardware - Select ethernet adapter - driver - Advanced - look for Wake on Lan and Pattern Matching and disable this.
ALso check your BIOS settings and disable all Wake on XXX settings.

On board ethernet driver conflict with windows XP

go to the bios settings & there you can disable the onboard LAN ....
so by this you will be able to boot from your hard drive ....

you can go to the bios settings by pressing F2 (or delete key in some PC s ) at the time of the booting (before the OS loads)...
there in bios settings just search for the LAN device & disable it ...

that s all your problem will be solved ....

any doubts reply me
i am always here to assist you
thank you
rate my solution as per your satisfaction

Home networking.

do you have a pci network adapter intalled with the proper drivers ? did you plug in ethernet cable directly into current pci lan card it will be located on lower part of back of computer? this will eliminate the problems with the router just to see if pci lancard is working or not . if the lan card is working unplug cable and plug in router and then try with router plugged in u might need to reset the router in order for it to work with lan card . if ur using and onboard lan eg attached to the motherboard then you must go into computer bios and enable onboard lan and then the ethernet cable should work with no problem good luck i hope this helps you get up and going getback to me if there are future problems.
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