August 19, 2010

IBM Thinkpad T41 Atheros wireless cannot obtain IP address from WiFi router

Able to detect WiFi signal but unable to get IP address from the wireless router. Found out that it is a known problem .... strangely not related to the wireless card but the version of the Intel Pro1000 MT NIC driver. See T42 Wireless/Intel 1000MT Compatibility Problem.

The solution is to replace the NIC driver with the below version from IBM:

Need this version of NIC driver for WiFi to work
1urc13ww (T41 NIC v7.2.17.101 XP).exe

If your wireless toggle button (Fn F5) does not work, use this version
7rwc09ww (T41 WLAN Atheros v5.3.0.85 XP).exe

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