Unidentified Network/Internet access

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  1. obssc
    Posts : 10
    Windows 7 Pro 64
       New #1

    Unidentified Network/Internet access


    Did a forum search and could not find my particular problem.

    I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

    One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

    I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

    Any suggestions? Thanks.
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  3. obssc
    Posts : 10
    Windows 7 Pro 64
    Thread Starter
       New #2

    obssc said:
    Did a forum search and could not find my particular problem.

    I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

    One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

    I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

    Any suggestions? Thanks.
    Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

    Any help would be appreciated. Thanks.
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  4. chev65
    Posts : 8,870
    Windows 7 Ult, Windows 8.1 Pro,
       New #3

    obssc said:
    obssc said:
    Did a forum search and could not find my particular problem.

    I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

    One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

    I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

    Any suggestions? Thanks.
    Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

    Any help would be appreciated. Thanks.
    I would need to see a screen shot of the ipconfig/all form this machine in order to help you. :)
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  6. Parman
    Posts : 881
    Windows 7 Ultimate x64
       New #4

    Have you attempted to update the firmware on the router?
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  7. obssc
    Posts : 10
    Windows 7 Pro 64
    Thread Starter
       New #5

    Parman said:
    Have you attempted to update the firmware on the router?
    No, all other machines on the network have full access and this specific machine still has access to all network drives. I have restarted the router and modem and all network PC's.

    Thanks.
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  8. obssc
    Posts : 10
    Windows 7 Pro 64
    Thread Starter
       New #6

    chev65 said:
    obssc said:
    obssc said:
    Did a forum search and could not find my particular problem.

    I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

    One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

    I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

    Any suggestions? Thanks.
    Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

    Any help would be appreciated. Thanks.
    I would need to see a screen shot of the ipconfig/all form this machine in order to help you. :)
    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Windows\system32>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : *****-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : ******.net

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : *****No, .net
    Description . . . . . . . . . . . : Intel(R) 82578DC Gigabit Network Connecti
    on
    Physical Address. . . . . . . . . : 38-60-77-56-40-34
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::7d1a:91eb:7684:fe52%14(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Friday, February 08, 2013 10:27:52 AM
    Lease Expires . . . . . . . . . . : Saturday, February 09, 2013 10:37:29 AM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 288907383
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-B0-AA-BA-38-60-77-56-40-34

    DNS Servers . . . . . . . . . . . : 68.105.28.17
    68.105.29.17
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.oc.cox.net:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : ******.net
    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:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:2c:1ab1:3f57:fef7(Prefer
    red)
    Link-local IPv6 Address . . . . . : fe80::2c:1ab1:3f57:fef7%12(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    C:\Windows\system32>

    Thanks!
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  10. chev65
    Posts : 8,870
    Windows 7 Ult, Windows 8.1 Pro,
       New #7

    obssc said:
    chev65 said:
    obssc said:

    Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

    Any help would be appreciated. Thanks.
    I would need to see a screen shot of the ipconfig/all form this machine in order to help you. :)
    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Windows\system32>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : *****-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : ******.net

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : *****No, .net
    Description . . . . . . . . . . . : Intel(R) 82578DC Gigabit Network Connecti
    on
    Physical Address. . . . . . . . . : 38-60-77-56-40-34
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::7d1a:91eb:7684:fe52%14(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Friday, February 08, 2013 10:27:52 AM
    Lease Expires . . . . . . . . . . : Saturday, February 09, 2013 10:37:29 AM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 288907383
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-B0-AA-BA-38-60-77-56-40-34

    DNS Servers . . . . . . . . . . . : 68.105.28.17
    68.105.29.17
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.oc.cox.net:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : ******.net
    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:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:2c:1ab1:3f57:fef7(Prefer
    red)
    Link-local IPv6 Address . . . . . : fe80::2c:1ab1:3f57:fef7%12(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    C:\Windows\system32>

    Thanks!
    No problems visible here. But I'm sure this is when the connection is working.

    Have you tried to start up in safe mode with networking to determine if an installed program or A/V software is causing the problem?

    If the problem goes away in safe mode then most likely the problem is caused by something installed on the system.

    Have you been to the Windows Update Center recently?

    Have you tried to update the Intel driver from the Intel site directly?

    Of course updating the Intel driver is the easiest option here, there appears to be a new driver 1-11-13 for your Intel adaptor. Choose the correct Op system when you get there. :)

    http://downloadcenter.intel.com/Sear...t+Ethernet+PHY
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  11. obssc
    Posts : 10
    Windows 7 Pro 64
    Thread Starter
       New #8

    Actually that screen shot was when it was not working.

    Yes, I did check it out in safe-mode. Same issues.

    If I renew the IP address it will work for a few minutes and click off.

    Thanks.
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  12. chev65
    Posts : 8,870
    Windows 7 Ult, Windows 8.1 Pro,
       New #9

    obssc said:
    Actually that screen shot was when it was not working.

    Yes, I did check it out in safe-mode. Same issues.

    If I renew the IP address it will work for a few minutes and click off.

    Thanks.
    Please update the driver from the Intel site. I added that link to my last post.

    Is there anything from Apple installed on this system like iTunes?
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  13. obssc
    Posts : 10
    Windows 7 Pro 64
    Thread Starter
       New #10

    Driver updated....

    There is no iTunes on the PC in question.

    Thanks.

    edit: Driver update did not solve.
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