Computer isn't communicating with router

By Keivan · 35 replies
Aug 2, 2013
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  1. jobeard

    jobeard TS Ambassador Posts: 11,128   +982

    OK, that Toshiba Modem:
    The Toshiba PCX2600 DOCSIS 2.0 Cable Modem has a two-year warranty.​

    This cable modem is not certified for DOCSIS 3.0.​

    Reliable and easy to set up, the PCX2600 is a good choice for DOCSIS 2.0 environments.​

    Data Over Cable Service Interface Specification (DOCSIS /ˈdɒksɪs/) is an international telecommunications standard that permits the addition of high-speed data transfer to an existing cable TV (CATV) system. It is employed by many cable television operators to provide Internet access (see cable Internet) over their existing hybrid fiber-coaxial (HFC) infrastructure.​

    Should be just fine AS LONG AS your cable provider is not v3.0!

    Let's try this layout (ie directly connect the Modem->PC). If this makes a connection, Win/7 will prompt you to set the network type to {Home, Work, Public} = = USE PUBLIC.
    Using a command prompt, you can verify the ability to resolve URLs into IP address using

    This setup is required to work if your router has any chance of functioning at all.
  2. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

  3. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

    Internal NiC is the fault here they disable the onboard NIC and get one for your system using PCI,
    PCI-E slots if your working with a desktop. Who makes the desktop or is that a clone? Disable onboard NIC vis BIOS and Windows. Otherwise you'll have system resources and IRQ still active for a faulty NIC. Your modem is above with the status lights.
  4. Keivan

    Keivan TS Rookie Topic Starter

    So what you're saying is to disable my internal NIC and use a second one? Through BIOS right?
  5. tipstir

    tipstir TS Ambassador Posts: 2,473   +126


    Yes if the NiC is duff (bad) you go into the BIOS for the LAN and disable it. When you boot into Windows check the Device Manager and make sure the internal NiC is disabled also. Who makes your PC? Can you open the case and take a picture of your slots you have in there. So you get the right advice to what to buy. PCI bus is slow it's white in color. PCI-e is faster but it has two sizes. Mostly the mini one is used black.

  6. Keivan

    Keivan TS Rookie Topic Starter

    My Pc is custom. Not made by a manufacturer. I needed custom parts for better performance which a store bought simply doesn't have. I see 2 PCI slots. I'm looking for the PCI-e. Could you link me a picture of the port so I know what I'm looking for?
  7. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

    If you see only 2x PCI slots those are 32-bit. Best buy Gigabit those are cheap today. PCI-e looks like this.


  8. Keivan

    Keivan TS Rookie Topic Starter

    WOO! Yes I have a PCI-e. You threw me off when you said black but it's right here. So I should look for a PCI-e card to replace my NIC?
  9. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

    Depends on the MOBO (motherboard) each one has it's own colors. See this one is white and ivory PCI-e's slots.
  10. Keivan

    Keivan TS Rookie Topic Starter

    How Much do Pci-e cards cost? I have a limited budget since I bought the PC recently.
  11. tipstir

    tipstir TS Ambassador Posts: 2,473   +126

    Are you in the USA? The cost of these PCI-e runs about..
    TP-LINK TG-3468 10/100/1000Mbps Gigabit PCI Express Network Adapter $13 bucks online.

    The one with Intel NPU in there cost double the price from
    StarTech PCI-Express Gigabit Network Server Adapter with REV E Intel 6 Chip NIC Card $27

    I use the Star Tech pretty quick one and stable when one of my Quad system onboard NIC gone duff (bad).

    TP-LINK they use either (Ralink, Marvel or Realtek) NPU they're okay also but not like the Intel version.

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