My PC not connecting to internet or network

[smartcard]

I have XP SP2, Avast Home Edition AV, COMODO Firewall and Lavasoft Lite.

My internet is connecting via the Linksys DSL router using the network card.

From last night onwards the PC stopped getting an IP address from the router, thus no internet. I tried the router no problem, and any other PC connecting the router is working fine.

I tried using dial-up to my ISP it connects but I can't browse.

I tried booting my PC using BART PE bootdisk and it connects to the router and works find.

So the problem is in my XP systems.

I tried complete scan (with the current definitions) using Avast, Stinger and Lavasoft.

Still the problem exists.

Please help me.

[screamer]

Did you try: ipconfig /release : ipconfig /renew ??

...screamer

[smartcard]

I disabled my Comodo firewall and it worked.:)

[screamer]

Now all you need to do is to reconfigure Comodo to talk to your router

...screamer