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Computer will not boot when ethernet cable connected

Discussion in 'Networking' started by Spline, Mar 31, 2008.

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  1. Spline

    Spline Thread Starter

    Feb 20, 2007
    I have a computer here that will not boot if the ethernet cable is connected. It will stall out on the bios splash screen. If you disconnect the cable and try again, it will boot fine and you can then attach the cable and have networking. It will then lock up ramdomly and you have to repeat the whole thing.
    The cable looked strained, so I replaced it to no avail. Tried reinstalling the drivers for the on board LAN adapter and that didn't work either. Added a network PCI card, disabled the on board and all is fine.
    Maybe someone could shed some light as to how an faulty Ethernet adapter would actually stop the POST when the cable is plugged in? Shouldn't it just skip it?

  2. zx10guy

    zx10guy Trusted Advisor Spam Fighter

    Mar 30, 2008
    Do you have PXE boot enabled or the boot order set to boot from the NIC first?
  3. TerryNet

    TerryNet Moderator

    Mar 23, 2005
    First Name:
    Does the boot fail with the cable connected to the PC but the other end not connected?
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