Computer only detects 1 of 3 networked machines

Discussion in 'Windows 7 Networking' started by aka, Dec 23, 2009.

  1. aka

    aka Honorable Member

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    Having trouble with one computer on my network. I have 4 computers in the network, 2 desktops, and 2 laptops.
    3 are running Win7 Home Premium, 1 is running XP sp3.
    3 of the computers have no trouble accessing the other machines. (one of these is the XP machine).
    But my desktop machine (Win7) is only able to see my laptop. The other 2 don't appear in the network map.
    I can ping the absent computers.
    I am not using HomeGroup.

    Workstation running
    DHCP Client running
    DNS Client running
    Server running
    TCP/IP Netbios helper running
    Computer Browser running
    Network Discovery is ON
    File and Printer sharing is ON
    Windows Firewall OFF
    All computers running BWMeter with firewall. (Turning BWMeter off changes nothing)

    I ran the Network Diagnostics tool, and after running for 1.5 hours, it was still "Waiting for results", so I canceled it.

    Router is a Buffalo WRT-HP-54G with DD-WRT firmware.

    I don't know what else to try. I can't understand why my desktop can detect one, but not the other two computers on the network.
    Any help will be much appreciated.... I have very little hair left to pull out at this point.
     
    Trouble and (deleted member) like this.
  2. Trouble

    Trouble Noob Whisperer

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    A lot of people often use the word "see" and the word "Access" as if they are interchangeable. So let's concentrate on the See, you say "I can ping the absent computers", can you ping them by their netbios name or just the ip address. Check and double check to make sure there are no duplicate or missing MAC address on any of the NICs, also make sure there are no duplicate machine names and all machines are in the same workgroup.
    Now when you attempt to access the absent machines can you use \\machinename\sharename or \\ipaddressOfMachine\sharename is either one successful?
     
  3. Trouble

    Trouble Noob Whisperer

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    Also trying using ping - a 192.168.nnn.nnn (the ip of the missing machine) from the machine that can't see it and see if the first line of the return results indicates the netbios name of the missing machine. If it does...is it accurate? if not try typing nbtstat -R to flush the netbios cache on the problem machine.
     
  4. Trouble

    Trouble Noob Whisperer

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    I should have said in the earlier post that you can examine the contents of the netbios cache by typing nbtstat -c at a command prompt.
     
  5. aka

    aka Honorable Member

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    \\machinename, no joy
    \\ipaddress, success! I can access all machines using this.

    Nope, no netbios name displayed.... I did the netbios flush earlier.

    No names in cache.

    Appreciate the help...
     
  6. Trouble

    Trouble Noob Whisperer

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    Well, actually, I didn't seem to have been of much help. You can try forcing the netbios information by editing the LMHost file or maybe just map a drive on the problem machine to a share on a machine that it can't see using the \\ipaddress\share and see if that will pop anything loose. Also reboot everything and bring the problem machine up last just to make sure all resources are available to it when it starts polling.
     
  7. aka

    aka Honorable Member

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    Was really hoping that would do it, but no.......

    I might try the other suggestions after the holidays. Thanks again. Maybe you didn't help me solve the riddle, but I learned something, just the same.
     
  8. Trouble

    Trouble Noob Whisperer

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    Good to know and thank you. Be sure and let us know how it shakes out.
    Happy Holidays
    Randy
     

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