It’s a common symptom I’ve been seeing lately where a computer is unable to obtain an IP from the DHCP server. Sometimes it happens after installing service pack 2. Often it can be fixed by manually entering an IP address; hitting repair, etc. but sometimes not. If you are experiencing this error, try running this patch: isplayLang=en”>http://www.microsoft.com/downloads/details.aspx?FamilyID=17d997d2-5034-4bbb-b74d-ad8430a1f7c8&isplayLang=en
Run this Registry tweak to complete the update. To do so, open Notepad and copy and paste the following lines.
Windows Registry Editor Version 5.00[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesIPSec] “AssumeUDPEncapsulationContextOnSendRule”=dword:00000002
Save the file with a .reg extension, and double-click to apply to the registry. Reboot your computer when complete.
If you still continue to have issues, you can try this fix which works pretty well also. It resets your TCP/IP and network settings on your machine. If you are on static IP, you will need to reapply your settings. WINSOCK fix: http://www.snapfiles.com/get/winsockxpfix.html
And if that doesn’t work, email me and I’ll hook you up with some more possible solutions.