LAN - Network no internet access

Hi, I'm having trouble with my network.. I'm using LAN cable. I have this strange error,when I boot the computer, the network notification on task bar show yellow exclamation error and showing that there is no internet access. This problem occurs randomly. Sometimes the network notification show exclamation error, sometimes the network worked well, and sometimes the network show exclamation error but suddenly in seconds it goes back on again...


I noticed that this problem occurred sometime after I plug the LAN cable into another computer with another OS (windows XP), the plug it back to my PC (windows 7). When I use the cable in other PC/laptop using windows XP, the network works flawlessly, but when plugged in my PC with windows 7, the problem occurs. It just like the LAN cable/network adapter/network setting get confused after the sudden changes of OS environment (well just my thought, I don't know what the problem really is)


I tried the troubleshooter, and it said windows cannot resolve the problem. I tried uninstalling network card, tried disable then re-enable the network adapter, none worked. From what I read in other forum, I have to select obtain IP address and DNS automatically. I can't do that because my LAN use some certain IP and DNS, changing it to obtain automatically means no network either.


And there is another solution, to restart the services in services.msi that pointed as somewhat important for network like computer browser, network connection, network location awareness, etc. Well that's worked, but only once, as the problem occurred (randomly) again.

The only temporary solution that worked is to keep resetting the needed services, changing the IP address, select validate upon exit in TCP/IPv4 in local area connection setting, or select Enable NETBIOS over TCP/IP..it give my network back, most time,before the problem occur again.


I'm tired fixing this problem every time I plug my LAN cable in.. Any idea guys?
3 answers Last reply
More about network internet access
  1. Hi dadiggle thx for your reply.

    I did what you say in first post, but apparently it fixed nothing. It just cleared my TCP/IPv4 IP address (the IP address now left blank and I have to fill it again), and also the "netsh interface reset all" command is never existed and therefore cannot be used in cmd prompt.


    I use Realtek pcie GBE network adapter.
  2. you mean ipconfig /all?

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Giovanni-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe GBE Family Contro
    Physical Address. . . . . . . . . : 1C-6F-65-33-E9-2E
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::ec0f:7d44:686d:a1a2%11(P
    IPv4 Address. . . . . . . . . . . : 192.168.1.18(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 186412901
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-2C-29-A6-1C-6F-

    DNS Servers . . . . . . . . . . . : 222.124.204.34
    203.130.193.74
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{BAD8C2D7-B8F7-4431-AA6B-4D281B39E115}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interf
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
  3. It might not be just the NIC but also your motherboard - getting an update for your motherboard BIOS is a good idea and also what was suggested by dadiggle download an updated driver for your NIC card specific for your OS.

    You may also try another NIC card and if this thing works then your problem-NIC is defective.
Ask a new question

Read More

LAN Internet Access LAN Cable Networking