Can't Identify Network

Jan 17, 2013

I've recently have a Sony Vaio laptop that will not get an IP addess and cannot identify networks. Both wired and wireless stay at identifying network, no internet access. At this point i've uninstalled Bonjour, reset my winsock catalog, checked the LSP, checked proxy setting - none, tried static information with no luck, uninstalled devices and reinstalled, deleted device drivers and reinstalled with new drivers, ran tweaking to reregister files, remove policies set by infections and so forth. I've scanned the PC with Combofix, Emsisoft Emergency Kit, TDSSkiller, and Malwarebytes and have found nothing. I've also removed the drive and scanned it externally. I'm almost down to a backup and reload. I've also remove IPv4 and IPv6 and reinstalled.

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My dads laptop worked fine with the WIFI for about 1,5 year, and now yesterday his computer won't identify our router. I have tried reinstalling the driver to his wireless hardware and that didnt work. I have tried with a static IP, but i wasn't sure if i did that correctly, so i can't safely say that what i did with the static IP would work either way.

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First thing I tried was simply disable/enabling my network adapter thinking it was just some hiccup. No luck there. Next I pulled the power from my router, and let it completely reboot. Still no luck. I then shut down my pc and booted back into windows 8 and sure enough I am able to get internet connectivity when I am running windows 8. This got me to thinking that when I loaded windows 8 there may be some new drivers installed for my network card that are somehow causing issues when I load into windows 7 again. Not sure how this is possible.

I was under the understanding that when I loaded Win8 to the separate partition that it would keep all it's drivers and settings there and not effect anything when I was loaded back on windows 7 (This logic could be completely wrong, I don't know). So I rebooted and loaded back into windows 7, went into device manager and uninstalled both network adapters and drivers, and rebooted into windows 7 again so it could re-discover and setup the network cards with default windows 7 drivers. This did not work either and I am still getting the same error.

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Last Friday my main desktop crashed (lost power to the machine) and on restarting the PC was unable to "identify" the network. By identify, I mean, when using "Network and Sharing Centre" on the basic network information page, the PC shows "Identifying" under "active networks" - no matter how long I leave the PC.

PC details
Model: Packard Bell Power x-30
Processor i7 870 @2.93GHz
RAM: 8GB
O/S: Windows 7 Home Premium (64-bit)

Modem Router details
Netgear N300 Wireless Dual Band ADSL2+ Modem Router

The main desktop is connected to the modem router (via Ethernet). The modem router is showing no sign of any problems itself, all the dashboard lights look ok (i.e. power is on, port 1 shows the Ethernet connection in place, both wireless bands are lit, the DSL is lit and so is the internet). The household contains a number of laptops which continue to work ok wirelessly and/or wired through Ethernet. Even mobile phones are accessing the wi-fi ok.

The DNS Server address looks ok, as that is the address of the web page to the router. I cannot access that web page (address) via the main desktop, but I can from other devices ok. Having gone through Device Manager the Realtek PCIe GBE Family Controller is showing as "working properly". I have tried pinging the DNS Server address, and that fail. I have gone through a system restore to a previous point (before the day of the crash) but that seems to have made no difference either.

I have attempted to set the IP addresses (for TCP/IPv4) directly
IP address 192.168.0.3
Subnet mask: 255.255.255.0
Default Gateway: 192.168.0.1
And therefore forced to set the DNS Server address too
Preferred DNS server: 192.68.0.1

But I don't know what to set for the alternate DNS Server, so left blank. This seems to step me forward, in that the device/network is now identified. However the internet access is still not work, as the "DNS Server is not responding".

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