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After sleep and/or hibernation, I can't get my LAN connection to work. Windows reports "Local Area connection doesn't have a valid IP configuration". Disabling and enabling the adapter doesn't work just like going through windows' network troubleshooting. Only thing that helps is a reboot.

I already tried:

  • disabling "Allow the computer to turn off this device to save power" in adapter settings
  • resetting winsock and ip configs through netsh
  • updating drivers
  • removing network locations in Network and Sharing Center

I'm on a laptop with Win7 64-bit, LAN adapter is reported as Realtek PCIe GBE Family Controller.
I share the wired connection using ICS through WLAN and netsh hostednetwork to occasionally connect my phone to wifi.

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3 Answers 3

up vote 1 down vote accepted

Clean reinstall of LAN drivers helped.

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solve the problem –  Moshe L Nov 23 at 18:48

When the issue occurs, is "Client for Microsoft Networks" checked in the LAN adapter properties? :)

Otherwise, like for all "Resuming from Hibernate/Sleep", first try to update the LAN network card drivers. Apart from this you could also disable power management on the LAN network card

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Client for MS networks was unchecked. I enabled it and will check if the issue persists. But as for the rest - did you read the post or just skimmed it? The issue is with the wired connection, not wireless, and apart from that I already tried disabling power management. –  Greg Oct 8 '13 at 16:42
    
It was a typo :) Sorry for that. Corrected. In my first sentence I wrote LAN, but somehow I switched to wireless :( –  Nikola Dimitrijevic Oct 8 '13 at 17:11
    
Didn't work, the problems is still there. –  Greg Oct 9 '13 at 13:33

Unchecking "Allow the computer to turn off this device to save power" worked for me. Navigation: Network and sharing center -> Change Adapter Settings -> Local Area Connection -> Properties -> Configure -> Power Management

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