Connection with router problem

By fibichrj
Jul 17, 2008
  1. There is my problem description:
    My PC is connected to the Internet by cable modem, that is connected to the router (SMC Barricade SMCWBR14S-N2). I have Windows XP Prof. SP3, 2 network adapters onboard (nVidia and Realtek). All other PC connected through that router have no problems, and so did I until yesterday. Suddenly, I was disconnected and now cannot connect to the router.

    - if I try to set get IP automatically by DHCP (router log says "sending OFFER to"), no valid address is obtained (only 169.254.*.*).
    - if I set the IP manually, computer seems connected, but there's no response to pinging
    - I tried turn off firewall and antivirus (ESET Smart Security)- no effect
    - I also tried to reset winsock with netsh, but no luck

    - then I tried to connect the PC to some other computer directly by crossed UTP and connection was working correctly

    Does anyone know, what should I do?
  2. Ididmyc600

    Ididmyc600 TechSpot Chancellor Posts: 1,415


    Try resetting your router to defaults, have you set it to MAC blocking ?

  3. Bobbye

    Bobbye Helper on the Fringe Posts: 16,335   +36

    You can also try power cycling the modem and router: disconnect power from router and modem. Wait about 20 sec. Reconnect. That frees up memory.

    Also consider the recent Windows Update that prevented connections on systems running Zone Alarm. Could that include you?
  4. fibichrj

    fibichrj TS Rookie Topic Starter

    Problem solved

    Thank you for your tips, but I I found the solution...
    (command) netsh int ip reset
    that did the thing... :)
  5. Bobbye

    Bobbye Helper on the Fringe Posts: 16,335   +36

    Thank you for letting us know. No everyone knows how to use those commands.
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