Something switching off the Ethernet port

Discussion in 'Windows Vista Networking' started by George from Waterloo, Oct 23, 2007.

  1. My ethernet port has gone dead on me.

    The event viewer shows a number of error messages at the time when ethernet
    connection went down:

    Warning 20/10/2007 9:51:52 AM E100B 4 None
    Adapter Intel(R) PRO/100 VE Network Connection: Adapter Link Down

    Warning 20/10/2007 9:56:38 AM Dhcp-Client 1003 None
    Your computer was not able to renew its address from the network (from the
    DHCP Server) for the Network Card with network address 001A925D41AC. The
    following error occurred:
    The semaphore timeout period has expired.. Your computer will continue to
    try and obtain an address on its own from the network address (DHCP) server.

    Error 20/10/2007 10:04:23 AM RasClient 20227 None
    CoID={358EDDED-8270-4284-8E85-850A8B08F028}: The user HP_MULTIMEDIA\George &
    Athelene dialed a connection named sympatico which has failed. The error code
    returned on failure is 815.

    This happened earlier in the year. To cut a long story short, I ended up
    getting a new motherboard from HP and restoring the computer to factory
    settings. This worked.. The ethernet connection worked for a week, then died
    on me on 20/10/07.

    I suspect the OS is somehow shutting it down.

    I can still connect through the USB port, but I'd like to reactivate the
    Ethernet port if possible and find out what is happening. With one proviso -
    I'm not willing to restore to factory settings again. I've lost too much time
    on the computer already.


    HP Pavilion Media Center m8020n TV PC
    Bell Sympatico Speedstream 5200 modem
    D-Link WBR-1310 router -> wireless to second (XP) computer
    Windows Vista on primary computer (Media Center)
    George from Waterloo, Oct 23, 2007
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  2. Have you tried double checking your ethernet cable (both connection
    and the state of the cable)? Try plugging it into a new port on your

    Does it ever work?

    Jeffrey Randow

    Windows Networking MVP 2001-2006

    On Mon, 22 Oct 2007 19:14:01 -0700, George from Waterloo <George from
    Jeffrey Randow, Oct 23, 2007
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  3. I've tried 3 cables.
    I'm certain it's not the cables, the modem, the router, or the motherboard.

    Does it ever work?
    Yes. It worked for about a month when I first bought the computer and for a
    week after the motherboard was replaced.

    George from Waterloo, Oct 23, 2007
  4. Just a bit more information.....

    When the computer was returned with the new motherboard, it was obvious that
    the IT staff were trying to be nice to me because they installed it without
    changing any of the settings - presumably trying to save me from reinstalling
    all my stuff. But the ethernet port didn't work on the new board either. So I
    restored it to the original factory settings and the port lit up like a
    christmas tree. That suggests to me that something in the OS turned it off.

    It then woeked for a week and went dead again.
    George from Waterloo, Oct 23, 2007
  5. What happens if you uninstall the NIC from device manager and then
    allow it to rescan hardware to redetect and install it again?
    Jeffrey Randow, Oct 24, 2007
  6. It reinstalls after a second or two. No change to the ethernet port
    George from Waterloo, Oct 24, 2007
  7. I'm out of ideas on this one.. Sorry... :(
    Jeffrey Randow, Oct 27, 2007
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