My work laptop (WinXP) recently developed a problem but I don't have a clue what caused it and I haven't been able to fix it.
The laptop used to connect over WLAN and LAN in the office, as well as at home.
I have a Belkin N1 MIMO Wireless Cable Router at home, connected to a Telstra modem.
At work, I use a Linksys WRT54G router, connected to the network switch.
This system has been in place for several years and I've never had a problem connecting at work or at home.

Since Saturday a week ago, the laptop cannot get an IP address either on WLAN or LAN, at work or at home.
All I remember doing around that time was fooling around with a PCMCIA DVB-T card and installing drivers and software for it.

Both the WLAN and LAN show up as connected on the laptop, but neither gets an IP address.
The WLAN also shows up as Authenticated.
Other laptops at work and at home still work OK, over both WLAN and LAN.

When I run IPCONFIG /ALL, the only response is:

"Windows IP Configuration"

I don't get anything else that tells me the MAC, PC name, device, etc.

When I run NBTSTAT -N, the only response is:

"NETBT is not bound to any devices"

I suspect there is a service that has been disabled but I don't know which one, or how to kickstart it.

I've had some experience setting up and fixing network issues but this has got be beat.

Any advice is greatly appreciated and I'll buy a coffee(s) for the person(s) who helps me fix this. Limited time offer only! Maximum of 10 :)