Unable to browse internet after SP2

[REDHAM]

For some reason when i start the computer up normally I am unable to get on the internet.  I get the  unable to display message.  But when I start in Safe mode with networking    I am able to browse the internet.    Someone pls help 

[Viper]

Do you have a firewall installed? It may be blocking internet access and need to be configured. SP2 enables the built in firewall by default which may be conflicting with a one you already had installed.

[patio]

If not try re-installing your network card drivers...