Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\Eduardo B>ipconfig /all Windows IP Configuration         Host Name . . . . . . . . . . . . : eduardo         Primary Dns Suffix  . . . . . . . :         Node Type . . . . . . . . . . . . : Broadcast         IP Routing Enabled. . . . . . . . : No         WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Wireless Network Connection 3:         Media State . . . . . . . . . . . : Media disconnected         Description . . . . . . . . . . . : Intel(R) PRO/Wireless 2200BG Network  Connection         Physical Address. . . . . . . . . : 00-13-CE-62-9F-49 Ethernet adapter Local Area Connection:         Media State . . . . . . . . . . . : Media disconnected         Description . . . . . . . . . . . : TAP-Win32 Adapter V9         Physical Address. . . . . . . . . : 00-FF-A4-83-5A-68 C:\Documents and Settings\Eduardo B>
Time-Warner upgraded our system, and that meant replacing their modem and my wireless router with their modem/router -- a Motorola that support b/g/n. We went from 15 Mb/sec to 50, but not without one problem. My wife's new Inspiron laptop running Win 7 connects without problem, and initially a Studio laptop running Vista SP2 and an Inspiron notebook running XP Pro SP3 did as well, although data speeds were not too good because the internal antenna in the Motorola do not have the range that the external ones on my Linksys does. Suddenly, both stopped connecting. They see the wireless nework, but can't connect (security is WPA2-PSK). The only problem I've found is both respond with Media Disconnected when using ipconfig in Command box. I've tried all the fixes I can find, but nothing seems to work. It has to be related to the new modem...both have the same issue at the same time? I've unplugged the modem but that doesn't help, and I find no settings that account for any issue. Both the laptop and notebook have always connected reliably. They are both (as far as I know) 802.11g, not 8012.11n. Of course, Time-Warner wants to fix the issue, but in the week since upgrading, the one tech who came out to fix the issue was mystified. I'm going to have someone with more experience with wi-fi out from them next, but this seems like something I should (and must) fix. Here's the best part. Every mobile device (Galaxy S, Galaxy S3, Droid Razor, Nexus 7, iPad, iPod) all connect.. Any and all suggestions welcomed. 
Two Dell laptops "Media Disconnected" simultaneously