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  1. #1
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    Can't always connect since upgrade to 8.1

    I can not always connect to our modem since I've updated to Windows 8.1 from windows 8. We have several other pcs , tablets, and phones that have no issue. I've tried to reset my network adapter and "sometimes" that works , I've re booted and " sometimes" that works but most of the time it's the luck of the draw. It's as if it can't find the wifi which is within 12 ft of the modem.

    I'm running Windows 8.1 in a Toshiba Satellite P855 i5 64 bit system

    any suggestions is appreciated.

  2. #2
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    Can you run this command when the network is working and when it's not, then post the result? This will tell you (us) the state of your network connections.
    cmd /c "ipconfig /all > %tmp%\IP.txt & notepad %tmp%\IP.txt"

    cheers, Paul

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    Larbec (2015-12-12)

  4. #3
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    Thanks Paul, I'll run it tonight after work and report back

  5. #4
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    I'd check for a driver update as you may not have gotten one via Windows Updates and not all Win 8 drivers were fully 8.1 compatible - but it could also be a DNS issue.

    Go Start - type ncpa.cpl and press enter - right click on your Wireless Network Connection and select Properties.

    Click on (TCP/IPv4) then on Properties then check the lower radio button to Use the following DNS server addresses and in the top row of boxes enter 8.8.8.8 and 8.8.4.4 in the lower row.

    Check the box to Validate settings upon exit - OK - Close

    That will start the trouble shooter and when it reports it couldn't identify the problem, you will be good to go - but a reboot wouldn't hurt either.

    I assume you are using the same AV program on all machines ?

  6. #5
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    I'll do as suggested and report back. I've made sure I had the latest drivers before I posted but the two suggestions you guys made I've not tried nor did I know how to do either one so it's going in my notes (-:

  7. #6
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    Sudo,

    I've actually ran this before. It says it could not identify the problem

  8. #7
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    Paul,

    Once I had cmd open what exactly to I put in the box because when I add all of you gave me it just goes back to c:\Windows\System32>

    Can you give me step by step instructions like to I CD/ to C: first? I've no clue and it's been a while since I've messed with the cmd

    Thanks

  9. #8
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    got it

    I got it , hold tight and I will report

  10. #9
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    Quote Originally Posted by Paul T View Post
    Can you run this command when the network is working and when it's not, then post the result? This will tell you (us) the state of your network connections.
    cmd /c "ipconfig /all > %tmp%\IP.txt & notepad %tmp%\IP.txt"

    cheers, Paul
    This is when it "is" working


    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Thunder
    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. . . . . . . . . : 9C-4E-36-95-F8-D1
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Ethernet:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : B8-88-E3-1E-95-27
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Wi-Fi:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2200
    Physical Address. . . . . . . . . : 9C-4E-36-95-F8-D0
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::e55b:a1b7:865f:2875%3(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, December 9, 2015 2:05:49 PM
    Lease Expires . . . . . . . . . . : Wednesday, December 9, 2015 4:11:34 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 329010742
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{4993C596-6701-4E7B-9CC7-47133EB01E5A}:

    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 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. . . . . . . . . . . : 2001:0:9d38:6ab8:2896:613:3f57:fff7(Preferred)
    Link-local IPv6 Address . . . . . : fe80::2896:613:3f57:fff7%9(Preferred)
    Default Gateway . . . . . . . . . : ::
    DHCPv6 IAID . . . . . . . . . . . : 352321536
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    NetBIOS over Tcpip. . . . . . . . : Disabled

  11. #10
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    Now that you've changed the DNS servers to Google's, wait to see if you still continue to get the intermittent disconnects and if so, run another ipconfig /all as advised when the connection is down and post when the connection returns.

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  13. #11
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    This is when it is down, I ate dinner and came back and it was disconnected from the modem. It loos like the same information??

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Thunder
    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. . . . . . . . . : 9C-4E-36-95-F8-D1
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Ethernet:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : B8-88-E3-1E-95-27
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Wi-Fi:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2200
    Physical Address. . . . . . . . . : 9C-4E-36-95-F8-D0
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::e55b:a1b7:865f:2875%3(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, December 9, 2015 5:55:31 PM
    Lease Expires . . . . . . . . . . : Wednesday, December 9, 2015 6:55:31 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 329010742
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{4993C596-6701-4E7B-9CC7-47133EB01E5A}:

    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 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. . . . . . . . . . . : 2001:0:9d38:6abd:183c:1c9e:3f57:fff7(Preferred)
    Link-local IPv6 Address . . . . . : fe80::183c:1c9e:3f57:fff7%9(Preferred)
    Default Gateway . . . . . . . . . : ::
    DHCPv6 IAID . . . . . . . . . . . : 352321536
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    NetBIOS over Tcpip. . . . . . . . : Disabled

  14. #12
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    Back up and running after resetting the network adapter

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Thunder
    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. . . . . . . . . : 9C-4E-36-95-F8-D1
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Ethernet:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : B8-88-E3-1E-95-27
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Wireless LAN adapter Wi-Fi:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2200
    Physical Address. . . . . . . . . : 9C-4E-36-95-F8-D0
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::e55b:a1b7:865f:2875%3(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, December 9, 2015 5:55:31 PM
    Lease Expires . . . . . . . . . . : Wednesday, December 9, 2015 7:00:05 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 329010742
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{4993C596-6701-4E7B-9CC7-47133EB01E5A}:

    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 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. . . . . . . . . . . : 2001:0:9d38:90d7:3c:44b:b53f:a00a(Preferred)
    Link-local IPv6 Address . . . . . : fe80::3c:44b:b53f:a00a%9(Preferred)
    Default Gateway . . . . . . . . . : ::
    DHCPv6 IAID . . . . . . . . . . . : 352321536
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    NetBIOS over Tcpip. . . . . . . . : Disabled

  15. #13
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    Well, it's still getting a DHCP IP address and if you hadn't said it was disconnected when you ran that ipconfig /all I would have thought it was back up.

    Next stop is Event Viewer - go Start - type eventvwr and press enter.

    When it has read the data click on Errors then on View All Instances of This Event in the lower right pane then look for errors with a corresponding time stamp to the disconnect.

    Clicking on each will give a bit more info in the lower pane.

    The source and Event ID number can be informative.

  16. #14
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    Something else you can try both when connected and not and that is to open a cmd prompt and enter -

    netsh wlan show networks mode=bssid

    Do this when connected, make a note of the signal strength % and channel number and then again when the disconnect occurs to compare.

  17. #15
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    Quote Originally Posted by Larbec View Post
    This is when it is down, I ate dinner and came back and it was disconnected from the modem. It loos like the same information??...

    In particular:
    Quote Originally Posted by Larbec View Post
    ...
    Wireless LAN adapter Wi-Fi:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2200
    Physical Address. . . . . . . . . : 9C-4E-36-95-F8-D0
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::e55b:a1b7:865f:2875%3(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.0.8(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, December 9, 2015 5:55:31 PM
    Lease Expires . . . . . . . . . . : Wednesday, December 9, 2015 6:55:31 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DHCPv6 IAID . . . . . . . . . . . : 329010742
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-D5-C7-DE-B8-88-E3-1E-95-27
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled
    ...
    Which indicates it is connected to the modem, i.e.: IPv4 Address. . . . . . . . . . . : 192.168.0.8(Preferred), etc.

    Go to Control Panel\System\Device Manager then right click on the "Intel(R) Centrino(R) Wireless-N 2200" adapter then click on the "Power Management" tab. If the "Allow the computer to turn off this device to save power" checkbox is ticked then click on the checkbox to remove the tick then click "OK".

    Some wireless network adapters don't wake up from sleep.
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