We have a Thinkpad R500 here that is having issues connecting to wireless networks. It has the LAN mini pci express card, with the most recent drivers. It is up to date with everything. We try to connect to our wireless network here (at UCLA), using WPA2-Enterpirse with PEAP and MS-CHAP, and a credential window is supposed to pop up, but never does. I have tried everything from deleting all certificates locally on the computer and local to the profile, to uninstalling/reinstalling WiFi drivers. Every time I try to connect to a network, I get "Windows cannot connect to this network". Troubleshooting obviously does nothing. I am not sure if this is something restricted to the wireless adapter or what, but I am sure it is nothing with the wireless network. The network is enterprise-run and works great on everything else. Any help would be appreciated. Thanks!