What happens if you do “ipconfig /renew”(no quotes) from a cmd prompt(start,run,cmd)
Also what does it say if you type in “ipconfig /all”
Have you re-booted your router and/or modem since as this may help(it seems like a dhcp problem)
Below is the result of running those two commands. Hope that will tell you is going on…
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Richard Fry>ipconfig /renew
Windows IP Configuration
No operation can be performed on Local Area Connection 3 while it has its media
An error occurred while renewing interface Wireless Network Connection : An oper
ation was attempted on something that is not a socket.
No operation can be performed on while it has its media disconnected.
C:\Documents and Settings\Richard Fry>ipconfig /all
Try going into Control Panel------>Network Connections----->Right click on each Local area connection and select properties then configure and try troubleshoot or maybe try re-installing the drivers.
Have you tried doing a system restore to before you had the messed up install,might be worth a shot.
I`ve been looking at a few problems similar to this and one was the router not releasing the IP address(DHCP) properly.It was solved by reseting the router,i.e by holding a pin/pencil into the reset part normally located at the back of the router.