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DHCP connection/ IP lease problems, please help!

Discussion in 'Networking' started by DavidParis, Feb 26, 2013.

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  1. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hey guys,

    Before I begin I just want to say that my computer knowledge is quite minimal so please forgive me. I know you are all busy so I will do my best not to waste your time. I have read every forum I could find on these topics and tried most solutions I could work out (see list below)

    Basic problem: lost internet connectivity 2 days ago. I was using the internet fine and then when I came back a little while later it would no longer work.

    Situation/context
    - computer: old Asus F3E series intel centrino
    - Windows Vista
    - router/modem: unfortunately I am travelling and staying in Paris at the moment so my internet was essentially an open wifi network which to connect usually you go to the wifi network, connect to the specific one and then when you open the browser it takes you to the landing page where you type in log in and password. These were provided to me by the landlord so it's not my account and I have no idea where the router/modem is unfortunately.

    After much reading of forums and attempting of solutions, I went to event viewer in admin, which confirmed my suspicion it was a DHCP problem. The event viewer on the day the internet stopped working said "Your computer was not able to renew its address from the network (from the DHCP server) for the Network Card with network address 0011xxxxx. The following occurred: The semaphore timeout period has expired. Your computer will try and obtain an address on its own from the network (DHCP server." Also on the same day, "Your computer has lost its IP address xxxxx on the Network Card with network address 001DE02746FB"

    When I IPconfig/all it says the IP is 169.xxx etc which is a private IP that the network is defaulted to connect to if DHCP doesn't automatically obtain an IP. I will post my full IPconfig/all result at the very bottom of this post. The result is different depending on which wifi network I connect to and only the problem one gives the private 169. IP

    Things I have tried/done:

    1. fix the common Vista DHCP bugs e.g. DhcpConnEnableBcastFlagToggle, and DhcpConnEnableBcastFlag change values
    2. IPconfig/release and IPconfig/renew (when I attempt the renew command it says 'Unable to contact DHCP server. Request timed out.)
    3. uninstalled NIC/adapter and rebooted/reinstall
    4. ensured the IPv4 and IPv6 were set to obtain automatically
    5. manually input the IP/DNS/gateway from the last IP I knew worked and also from my other computer which works fine
    6. DNS reset and flush commands
    7. pinged my TCP/IP stack 127.0 etc which was normal
    8. reset the TCP/IP stack
    9. automatically tried getting new IP address
    10. reset the adapter
    11. disabling the IPv6 temporarily


    Information which may be relevant

    • My computer is able to connect to all other networks that it detects and when I open the browser the landing pages open up no problem and all the parameters are normal when I IPCONFIG/all so I assume my hardware/NIC/adapter is working fine
    • My wife's computer (HP intel core i3) and phone can connect to the wifi network in question no problem so I assume the wifi router/modem is fine
    • when I connect to another open network other than my normal (currently broken) one and ping the DNS it works fine, so does IPCONFIG/release and renew
    • When I connect to the network in question it says 'unidentified network' in network centre, which I gather is just a symptom of having no IP address/DHCP server contact but thought I'd mention it
    My conclusions based on limited understanding
    - given my computer can connect to all other wifi networks and their internet landing pages I think my adapter and computer are working ok
    - given my wifes computer can connect to the network in question I think the internet/router/modem must be working ok
    - therefore there is some specific issue related to my specific computer and it's ability to connect to this one networks DHCP..what I don't know is whether the cause or effect was being unable to renew the IP lease



    Questions

    1. why would my IP lease randomly not be renewed? Is the 'unable to connect to DHCP' error a result of losing the IP lease or is the lease the result of an inability to connect?
    2. Could the ISP have blocked my specific IP address on one computer from connecting to their DHCP server?
    3. Is there any thing else I could try which doesn't require having the router/modem, or is there someway I could locate these on a public network?
    Any advice or suggestions would be greatly appreciated. Thanks to anyone who tries to help. My apologies if I said something stupid as I literally learned everything I just tried in the last 48 hrs.


    Sincerely,
    Dave


    IPCONFIG/All:

    Microsoft Windows [Version 6.0.6002]
    Copyright (c) 2006 Microsoft Corporation. All rights reserved.
    CWindowssystem32ipconfigall

    Windows IP Configuration
    Host Name . . . . . . . . . . . . David-PC
    Primary Dns Suffix . . . . . . .
    Node Type . . . . . . . . . . . . Hybrid
    IP Routing Enabled. . . . . . . . No
    WINS Proxy Enabled. . . . . . . . No
    Wireless LAN adapter Wireless Network Connection
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Intel(R) Wireless WiFi Link 4965AGN
    Physical Address. . . . . . . . . 00-1D-E0-27-46-FB
    DHCP Enabled. . . . . . . . . . . Yes
    Autoconfiguration Enabled . . . . Yes
    Link-local IPv6 Address . . . . . fe80d03a3e21e2bbc52%38(Preferred)
    Autoconfiguration IPv4 Address. . 169.254.188.82(Preferred)
    Subnet Mask . . . . . . . . . . . 255.255.0.0
    Default Gateway . . . . . . . . .
    DHCPv6 IAID . . . . . . . . . . . 721427936
    DHCPv6 Client DUID. . . . . . . . 00-01-00-01-0E-D8-12-B1-00-1D-E0-27-46-FB
    DNS Servers . . . . . . . . . . . fec000ffff1%1
    fec000ffff2%1
    fec000ffff3%1
    NetBIOS over Tcpip. . . . . . . . Enabled

    Ethernet adapter Local Area Connection

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Attansic L1 Gigabit Ethernet 101001000B
    ase-T Controller
    Physical Address. . . . . . . . . 00-1E-8C-28-6C-DE
    DHCP Enabled. . . . . . . . . . . Yes
    Autoconfiguration Enabled . . . . Yes

    Ethernet adapter Bluetooth Network Connection

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . 00-1D-60-FC-F4-9B
    DHCP Enabled. . . . . . . . . . . Yes
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 6

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . isatap.{1D7D52E0-8250-4169-AE75-C857B2601
    E22}
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 7

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . isatap.{FB10BE30-3A5E-4BEE-BF04-3BEDE36F2
    6D5}
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 10

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . 02-00-54-55-4E-01
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 17

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Microsoft ISATAP Adapter #3
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 21

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . isatap.wireless
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 22

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . isatap.{FB10BE30-3A5E-4BEE-BF04-3BEDE36F2
    6D5}
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 29

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Microsoft ISATAP Adapter #6
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    Tunnel adapter Local Area Connection 31

    Media State . . . . . . . . . . . Media disconnected
    Connection-specific DNS Suffix .
    Description . . . . . . . . . . . Microsoft ISATAP Adapter #7
    Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . No
    Autoconfiguration Enabled . . . . Yes

    CWindowssystem32
     
  2. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    P.S. also forgot to list I have tried disabling all firewalls and antivirus stuff.
     
  3. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,251
    First Name:
    Wayne
    the fact you can connect to other networks - seems to indicate the hardware is OK
    it maybe a problem on the router for that network

    i would try removing the wireless profile for that network

    How to remove Wireless Profiles - for Vista and Windows 7
    http://uk.tp-link.com/article/?id=281
    http://www.home-network-help.com/delete-wireless-network.html
    - Vista/Windows7:
    - delete the wireless profiles
    Start> control Panel> classic view> network and sharing center> manage wireless networks

    Delete the profiles
    you will then have to enter the wireless security key for any networks you connect to - so make sure you know the correct password , and not using an incorrect password at all
    ------------------------------------------------------------------------
     
  4. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hi Etaf,

    Thanks heaps, unfortunately I have tried removing it. You can only select to remove it if it is a 'remembered network', which initially it was. I then went in and right clicked 'remove from network'. There is no wireless security key initially as the connection is 'open network' then takes you to the landing where you enter the log in details. Unfortunately removing the network did not help. Also I think the router for the network must be ok as my wife's computer and all our phones etc can connect no problem. It seems a specific connection problem with my computer where my specific IP lease/DHCP connection ability has been lost to that one network.
     
  5. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,251
    First Name:
    Wayne
    is there a working network available near by - ? can we see an ipconfig /all

    also from wifes pc - connected to the network, which does not work for you - can we see an ipconfig /all
    make sure also say which is which in the reply

    paris is around 01:25 now - and i'm in UK and past my bedtime
     
  6. TerryNet

    TerryNet Moderator

    Joined:
    Mar 23, 2005
    Messages:
    77,932
    First Name:
    Terry
    Make sure you have the latest wireless driver from the laptop manufacturer's web site.

    Any chance you are being blocked because of misuse of the network? Or because they meant to block somebody else but entered incorrect info into the router? (You'd have to contact the network administrator for answers to these.)
     
  7. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hi TerryNet,

    Thanks for the post, a lot of what I've tried so far as come from your advice on other threads.

    As far as I can tell I haven't misused the network for anything they would ban me for. There has been soft core material viewed but nothing I think they'd ban me for. My other theory was that even if they did want to ban me they'd ban the account number rather than one specific IP address? As my wife's computer connects fine, using the same account. So from the ISP point of view that could just be me using another computer on the same account.

    Also, how could I get the latest manufacturing driver without internet? I know I could search on my wife's computer but I'm not even sure how to find it as normally it's an automatic update thing. Also, my driver says it's up to date in properties and has been working fine for many weeks so not sure how it could be needing an update?
     
  8. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hi Etaf,

    Here's an ipconfig/all after I've connected to a random open working network:

    Microsoft Windows [Version 6.0.6002]
    Copyright (c) 2006 Microsoft Corporation. All rights reserved.

    C:\Users\David>ipconfig/all

    Windows IP Configuration

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

    Wireless LAN adapter Wireless Network Connection:

    Connection-specific DNS Suffix . : ibrowse.com
    Description . . . . . . . . . . . : Intel(R) Wireless WiFi Link 4965AGN
    Physical Address. . . . . . . . . : 00-1D-E0-27-46-FB
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::d03:a3e2:1e2b:bc52%38(Preferred)
    IPv4 Address. . . . . . . . . . . : 10.216.58.27(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, 27 February 2013 10:35:07 AM
    Lease Expires . . . . . . . . . . : Wednesday, 27 February 2013 11:05:06 AM
    Default Gateway . . . . . . . . . : 10.216.58.1
    DHCP Server . . . . . . . . . . . : 10.216.58.1
    DHCPv6 IAID . . . . . . . . . . . : 721427936
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-0E-D8-12-B1-00-1D-E0-27-46-FB

    DNS Servers . . . . . . . . . . . : 93.158.32.117
    93.158.32.20
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Local Area Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Attansic L1 Gigabit Ethernet 10/100/1000B
    ase-T Controller
    Physical Address. . . . . . . . . : 00-1E-8C-28-6C-DE
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 00-1D-60-FC-F4-9B
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 6:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.{1D7D52E0-8250-4169-AE75-C857B2601
    E22}
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 7:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.{FB10BE30-3A5E-4BEE-BF04-3BEDE36F2
    6D5}
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 10:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 02-00-54-55-4E-01
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:3c00:1b6e:f527:c5e4(Pref
    erred)
    Link-local IPv6 Address . . . . . : fe80::3c00:1b6e:f527:c5e4%21(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter Local Area Connection* 17:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 21:

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

    Tunnel adapter Local Area Connection* 22:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.{FB10BE30-3A5E-4BEE-BF04-3BEDE36F2
    6D5}
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 29:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #6
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Local Area Connection* 31:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : ibrowse.com
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #7
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    and here's one from my wife's compute of the network which won't work on my computer:
    Microsoft Windows [Version 6.2.9200]
    (c) 2012 Microsoft Corporation. All rights reserved.

    C:\Users\Anthea>ipconfig/all

    Windows IP Configuration

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

    Wireless LAN adapter Local Area Connection* 11:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
    Physical Address. . . . . . . . . : A4-17-31-15-23-8D
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Wi-Fi:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Ralink RT5390R 802.11bgn Wi-Fi Adapter
    Physical Address. . . . . . . . . : A4-17-31-15-23-8B
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::6d82:25d1:1192:dfe3%13(Preferred)
    IPv4 Address. . . . . . . . . . . : 78.251.26.251(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.128.0
    Lease Obtained. . . . . . . . . . : Tuesday, 26 February 2013 10:07:09 PM
    Lease Expires . . . . . . . . . . : Wednesday, 27 February 2013 1:41:43 AM
    Default Gateway . . . . . . . . . : 78.251.127.254
    DHCP Server . . . . . . . . . . . : 78.251.127.254
    DHCPv6 IAID . . . . . . . . . . . : 329520945
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-38-C2-FD-84-34-97-99-A5-99

    DNS Servers . . . . . . . . . . . : 212.27.40.240
    212.27.40.241
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Ethernet:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : 84-34-97-99-A5-99
    DHCP Enabled. . . . . . . . . . . : Yes
    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. . . . . . . . . . . : 2001:0:4137:9e76:c67:1b60:b104:ed62(Prefe
    rred)
    Link-local IPv6 Address . . . . . : fe80::c67:1b60:b104:ed62%16(Preferred)
    Default Gateway . . . . . . . . . :
    DHCPv6 IAID . . . . . . . . . . . : 520093696
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-38-C2-FD-84-34-97-99-A5-99

    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter isatap.{4D528042-3406-4916-A86D-B50F5DF5E380}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter 6TO4 Adapter:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft 6to4 Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2002:4efb:1afb::4efb:1afb(Preferred)
    Default Gateway . . . . . . . . . :
    DNS Servers . . . . . . . . . . . : 212.27.40.240
    212.27.40.241
    NetBIOS over Tcpip. . . . . . . . : Disabled

    C:\Users\Anthea>
     
  9. TerryNet

    TerryNet Moderator

    Joined:
    Mar 23, 2005
    Messages:
    77,932
    First Name:
    Terry
    You can get internet access through other networks according to your statement and your following post. :) Otherwise, download the driver using another computer and copy it over using removable media.

    www.asus.com - pick your country - Support (towards the bottom right on the United States page) - if it's like most OEMs you will then find your model and choose your OS.
     
  10. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Thanks TerryNet,

    I can get internet access only to the landing/log in pages of the open networks. But without log in details I can't actually surf the net. But it's still enough to show me that my computer definitely connects to the net ok.

    I'll try updating the driver now, thanks.
     
  11. Couriant

    Couriant Trusted Advisor

    Joined:
    Mar 26, 2002
    Messages:
    33,063
    First Name:
    James
    Forgive me if you have done this as there is a lot of text to read :) but have you tried removing the network and reconnected to it? Is is an open network?
     
  12. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hi Couriant,

    No worries, here's my response to Etaf who suggested this also: unfortunately I have tried removing it. You can only select to remove it if it is a 'remembered network', which initially it was. I then went in and right clicked 'remove from network'. There is no wireless security key initially as the connection is 'open network' then takes you to the landing where you enter the log in details. Unfortunately removing the network did not help. Also I think the router for the network must be ok as my wife's computer and all our phones etc can connect no problem. It seems a specific connection problem with my computer where my specific IP lease/DHCP connection ability has been lost to that one network.
     
  13. Couriant

    Couriant Trusted Advisor

    Joined:
    Mar 26, 2002
    Messages:
    33,063
    First Name:
    James
    Unless they are blocking you my MAC address (which makes no sense) then I think somewhere along the lines of a firewall issue. Do you have or had a security program like Norton/McAfee etc?
     
  14. DavidParis

    DavidParis Thread Starter

    Joined:
    Feb 26, 2013
    Messages:
    12
    Hey guys,

    So a few updates:

    1. I noticed another message 'The IP address lease xxx.x.x.x for the network card with network address xxx has been denied by DHCP server xxxx. The DHCP server sent a DHCPNACK message.

    2. I attempted to find the updates for my network adapter which is an intel R Wireless Wifi Link 4965AGN version 11.5.0.32 but my computer said my driver is up to date. Also it has been working completely fine until about two days ago so I don't think it's that

    3. When I sent a ping from my computer to the DNS of the wifi site in question, which I get from doing an IPCONFIG/ALL from my wife's computer (ipconfig/all posted above) it works fine. When I do a ping from my computer 4 pings are lost. So somehow it seems that the DHCP responds to my wife's computer but either a) doesn't respond to mine or my computer has a specific issue communicating with it. (Sending pings to other open networks my computer can connect to works fine from my comp, but I can't surf the net as I can only connect but not log in past the landing page/log in when I open the browser)

    4. I discovered more about the router/wifi: So basically people who buy internet with this company get given a password and user name that allows them to connect to the internet through anyone else's modem/router which is with the same company.
    Interestingly: today I went to a completely new location with my laptop and tried to connect to the internet using the same wifi network (Which has multiple locations in public but still requires a log in when you open the web browser) and the exact same thing happened (i.e. could not connect to DHCP server of that wifi) BUT my phone could connect and other computer also. So it's not even a specific router/modem thing it's my computer not connecting. HOWEVER my computer connects to all other wifi so how it could be located to just one network I don't understand. If it was a computer specific thing I would have thought it'd affect my ability to connect to all DHCPs?

    Since the internet/wifi works with all other devices and since my computer could not connect to that network even when I moved miles away to a new location, I think it's not router/modem or network related.

    I'm starting to believe it's something specific to my computer but I have no idea why it would only affect my computers ability to connect to only one DHCP server of that one network, and how I could connect to all other networks?

    I am now trying to uninstall any antivirus or firewall stuff. I downloaded the norton removal tool but can't remember if I ever even had norton. I use AVG and have never had a problem, it was installed years ago and my computer was working fine until two days ago.

    Any thoughts regarding what could cause my computer to not connect to only one specific DHCP but can to all others, and why it would suddenly happen two days ago when to my knowledge I haven't changed/downloaded anything new? Any other suggestions I'm pretty desperate?
     
  15. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,251
    First Name:
    Wayne
    use the avg removal tool - see below

    also try using a fixed open dns service theres google and opendns info below

    ------------------------------------------------------------------------

    OPENDNS public DNS

    OpenDNS’s 12 global data centers are strategically located at the most well-connected intersections of the Internet.
    Unlike other providers, OpenDNS’s network uses sophisticated Anycast routing technology, which means no matter where you are in the world, your DNS requests are answered by the datacenter closest to you.

    http://www.opendns.com/business-solutions/premium-dns/benefits/

    Completely Free - sign up for an account and you will see instructions for setting up on your router or PC
    The server address are

    208.67.222.222
    208.67.220.220

    http://www.sevenforums.com/tutorials/15037-dns-addressing-how-change-windows-7-a.html

    Then once you have set up those DNS entries

    Flush & register DNS

    Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
    In the command prompt window that opens, type the following commands:

    Ipconfig/flushdns
    ipconfig/registerdns


    If you receive the message
    The requested operation requires elevation.
    Then please open the command prompt as administrator
    Start> All Programs> Accessories and then right click on Command Prompt, select "Run as Administrator" to open a command prompt.

    now type the command again

    ---------------

    Google public DNS
    Note using google public DNS servers from outside the US may actually slow performace - so use the following as a test to identify DNS issues - if these resolve the issues , then we need to investigate further to optimise the use of DNS


    Google public DNS
    http://code.google.com/speed/public-dns/

    Theres also a link on how to setup those DNS IP address up on a PC
    http://code.google.com/speed/public-dns/docs/using.html

    Then once you have set up those DNS entries

    Flush & register DNS

    Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
    In the command prompt window that opens, type the following commands:

    Ipconfig/flushdns
    ipconfig/registerdns


    If you receive the message
    The requested operation requires elevation.
    Then please open the command prompt as administrator
    Start> All Programs> Accessories and then right click on Command Prompt, select "Run as Administrator" to open a command prompt.

    now type the command again



    AVG Removal Tools
    http://www.avg.com/gb-en/utilities
    http://www.avg.com/ww-en/utilities

    > removal tool, that can be used with AVG 2013 http://www.avg.com/tools#tba2 - > on Installation Tab > use the AvgRemover
    > removal tool, that can be used with AVG 2012 http://www.avg.com/tools2012.tpl-mcr1#tba2 -> on Installation Tab > use the AvgRemover
    > removal tool, that can be used with AVG 2011 http://www.avg.com/tools2011.tpl-mcr1#tba2 -> on Installation Tab > use the AvgRemover
    > removal tool, that can be used with AVG 9.0 http://www.avg.com/tools9.tpl-mcr1#tba2 -> on Installation Tab > use the AvgRemover
    > removal tool, that can be used with AVG 8.5 http://www.avg.com/tools8.tpl-mcr1#tba2 -> on Installation Tab > use the AvgRemover
     
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